Charles B. Hammond, M.D., of Nashua, New Hampshire did a favor for today's readers of the Journal of the History of Dentistry. He wrote a concise but fact-filled biography of Luther Franklin Locke, M.D. which was published in Edward Everett Parker's History if the City of Nashua, in 1897.1.
{"title":"Luther Franklin Locke, M.D.: 19th Century Children's Dentistry Advocate.","authors":"Theodore P Croll, Ben Z Swanson","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Charles B. Hammond, M.D., of Nashua, New Hampshire did a favor for today's readers of the <i>Journal of the History of Dentistry</i>. He wrote a concise but fact-filled biography of Luther Franklin Locke, M.D. which was published in Edward Everett Parker's <i>History if the City of Nashua</i>, in 1897.<sup>1</sup>.</p>","PeriodicalId":73982,"journal":{"name":"Journal of the history of dentistry","volume":"69 2","pages":"146-148"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39589839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Emily Kakos, Mike Jaafar, Vaughn C Ayroso, Andrew Vorrath, Fareed Tareen, Andrew I Spielman
Quackery in medicine is as old as medicine. In times of crisis desperate patients believe in extraordinary claims. In the annals of pain killer quack medicine, elixirs, nostrums and liniments hold a special position. The College of Dentistry at NYU received a collection of 234 bottles of quack medicine dating from approximately 1850 through 1940.
In this paper, the THIRD in a series of articles featuring "Elixirs of the Past", we focus on five particularly notable samples claiming to have "electric" properties: Electric Brand Oil Compound, Hunt's Lightening Oil, Electric Indian Liniment, Regent's Electric Liniment and Haven's Electro-magnetic Liniment. Needless to say, none of these contained electricity or even electrolytes for that matter. In 1906, Congress enacted The Pure Food and Drug Act to prohibit exaggerated or unsubstantiated claims in the marketing and labeling of household products and to control the use of potentially harmful ingredients. The modern-day use of internet advertisements to make unsupported claims is in some ways even more brazen than the advertisements from a century ago.
{"title":"Electricity.","authors":"Emily Kakos, Mike Jaafar, Vaughn C Ayroso, Andrew Vorrath, Fareed Tareen, Andrew I Spielman","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Quackery in medicine is as old as medicine. In times of crisis desperate patients believe in extraordinary claims. In the annals of pain killer quack medicine, elixirs, nostrums and liniments hold a special position. The College of Dentistry at NYU received a collection of 234 bottles of quack medicine dating from approximately 1850 through 1940.</p><p><p>In this paper, the THIRD in a series of articles featuring \"Elixirs of the Past\", we focus on five particularly notable samples claiming to have \"electric\" properties: <i>Electric Brand Oil Compound, Hunt's Lightening Oil, Electric Indian Liniment, Regent's Electric Liniment</i> and <i>Haven's Electro-magnetic Liniment.</i> Needless to say, none of these contained electricity or even electrolytes for that matter. In 1906, Congress enacted <i>The Pure Food and Drug Act</i> to prohibit exaggerated or unsubstantiated claims in the marketing and labeling of household products and to control the use of potentially harmful ingredients. The modern-day use of internet advertisements to make unsupported claims is in some ways even more brazen than the advertisements from a century ago.</p>","PeriodicalId":73982,"journal":{"name":"Journal of the history of dentistry","volume":"69 2","pages":"138-145"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39678639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
There are few formal publications in Australia relating to Victorian-era dentures and reliable evidence relating to their contemporaneous design, ownership and type is almost non-existent. Archeologists have reported only ten denture units retrieved from eight individuals interred in 19th century Australian cemeteries. A salvage excavation in 2001 at the North Brisbane Burial Grounds (NBBG, 1843-1875) uncovered, inter alia, an assemblage of two metal- and two vulcanite-based dentures. The names of the owners, the records of the dental practitioners and allied contextual information have been lost. This report is the first detailed analysis in Australia of 19th century dentures. It presents an investigation into the composition and underpinning laboratory technology within this quartette of NBBG artifacts, which represent half the known, and the only two alloy-based, dentures retrieved from 19th century cemeteries throughout Australia. The data within is a compilation of and extensive literature review, historical research methods, macroscopic inspection, scanning electron microscopy and energy dispersive x-ray spectroscopy. The results provide insight into dental practice and affiliated technologies in Victorian-era Brisbane.
{"title":"Victorian-Era Dentures in Brisbane, Australia.","authors":"Kate E Morris, Harry F Akers","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>There are few formal publications in Australia relating to Victorian-era dentures and reliable evidence relating to their contemporaneous design, ownership and type is almost non-existent. Archeologists have reported only ten denture units retrieved from eight individuals interred in 19<sup>th</sup> century Australian cemeteries. A salvage excavation in 2001 at the North Brisbane Burial Grounds (NBBG, 1843-1875) uncovered, <i>inter alia</i>, an assemblage of two metal- and two vulcanite-based dentures. The names of the owners, the records of the dental practitioners and allied contextual information have been lost. This report is the first detailed analysis in Australia of 19<sup>th</sup> century dentures. It presents an investigation into the composition and underpinning laboratory technology within this quartette of NBBG artifacts, which represent half the known, and the only two alloy-based, dentures retrieved from 19<sup>th</sup> century cemeteries throughout Australia. The data within is a compilation of and extensive literature review, historical research methods, macroscopic inspection, scanning electron microscopy and energy dispersive x-ray spectroscopy. The results provide insight into dental practice and affiliated technologies in Victorian-era Brisbane.</p>","PeriodicalId":73982,"journal":{"name":"Journal of the history of dentistry","volume":"69 2","pages":"74-93"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39589922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Microbial control and tooth retention in dentistry have been paramount for all clinicians for over 130 years. However, in the late 1800s and early 1900s the dental profession was challenged to devise methods to eradicate microbial species from the root canal system if teeth were to be retained in symptom-free function. One system that was devised was electrosterilization and its variations, the roots and methods of which will be explored in this paper.
{"title":"Some Historical Perspectives on the Use of Electrosterilization in Root Canal Disinfection.","authors":"Alex Yee, James L Gutmann","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Microbial control and tooth retention in dentistry have been paramount for all clinicians for over 130 years. However, in the late 1800s and early 1900s the dental profession was challenged to devise methods to eradicate microbial species from the root canal system if teeth were to be retained in symptom-free function. One system that was devised was electrosterilization and its variations, the roots and methods of which will be explored in this paper.</p>","PeriodicalId":73982,"journal":{"name":"Journal of the history of dentistry","volume":"69 2","pages":"114-123"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39678632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We are pleased to publish the following postcard that was submitted by Dr. Robert (Bob) L. Koolkin from Beaufort, South Carolina, one or our long-time members. This is one of his favorite cards that was posted in 1903. He writes, "Please note the 'key' that the 'dentist' holds behind his back as well as both the two sets of initials, as well as the "Before" and "After" captions that the writer added. The brief note on the reverse also gives the reader a feel for the times (Figs. 1 A & B). Fig. B reads: "Am very sorry to hear you have such a bad face, hope you will soon be better. I wonder if you could send me a little green book from the cupboard in the top bedroom called Arnolds Handbook of Africa, also one of the British Isles, paper covers. Much Love, from Hilda".
{"title":"<i>\"Cards, Collections and Memorabilia\"</i>.","authors":"Robert L Kooklin","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>We are pleased to publish the following postcard that was submitted by Dr. Robert (Bob) L. Koolkin from Beaufort, South Carolina, one or our long-time members. This is one of his favorite cards that was posted in 1903. He writes, \"Please note the 'key' that the 'dentist' holds behind his back as well as both the two sets of initials, as well as the \"Before\" and \"After\" captions that the writer added. The brief note on the reverse also gives the reader a feel for the times (Figs. 1 A & B). Fig. B reads: \"Am very sorry to hear you have such a bad face, hope you will soon be better. I wonder if you could send me a little green book from the cupboard in the top bedroom called Arnolds Handbook of Africa, also one of the British Isles, paper covers. Much Love, from Hilda\".</p>","PeriodicalId":73982,"journal":{"name":"Journal of the history of dentistry","volume":"69 2","pages":"131"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39678634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
For decades dentists have faced the challenge of achieving profound anesthesia in the presence of a severe tooth ache. Frequently this challenge was more acute when the tooth or teeth in question were mandibular molars. Over a 125 years ago this clinical dilemma was managed by using cocaine, both directly on an exposed dental pulp and often times using a solution of such injected directly into the pulp. Both clinical applications were considered as achieving "pressure anesthesia" sufficient to permit pulp extirpation. This historical perspective will focus on both the origins of this approach and its contemporary counterparts.
{"title":"The Roots of Pressure Anesthesia and its Contemporary Similarities.","authors":"Kristen Bingham, James L Gutmann","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>For decades dentists have faced the challenge of achieving profound anesthesia in the presence of a severe tooth ache. Frequently this challenge was more acute when the tooth or teeth in question were mandibular molars. Over a 125 years ago this clinical dilemma was managed by using cocaine, both directly on an exposed dental pulp and often times using a solution of such injected directly into the pulp. Both clinical applications were considered as achieving \"pressure anesthesia\" sufficient to permit pulp extirpation. This historical perspective will focus on both the origins of this approach and its contemporary counterparts.</p>","PeriodicalId":73982,"journal":{"name":"Journal of the history of dentistry","volume":"69 2","pages":"94-98"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39678207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the late 18th and early 19th century American-trained dentists were perceived by the public to be superior to locally trained dentists in many parts of Europe. Some individuals traveled to the United States for training. Other dentists simply claimed falsely to have an American degree or received one through the mail from one of several dental school diploma mills operating in the United States.
{"title":"Early Dental Trade Card Metamorphic Before and After.","authors":"Ben Z Swanson, Theodore P Croll","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In the late 18th and early 19th century American-trained dentists were perceived by the public to be superior to locally trained dentists in many parts of Europe. Some individuals traveled to the United States for training. Other dentists simply claimed falsely to have an American degree or received one through the mail from one of several dental school diploma mills operating in the United States.</p>","PeriodicalId":73982,"journal":{"name":"Journal of the history of dentistry","volume":"69 2","pages":"129-130"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39678633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Very few "Dentist AND Cupper" trade cards are known and this is the only illustrated one known to the authors. "Mr. Glissan, Dentist and Cupper, 147 Blackfriars Road, (London), Teeth extracted for the Poor Gratuitously." Above the text and in the center is a eight-sided brass boxed scarificator. Developed in the 18th century as a more humane and efficient instrument for bloodletting than lancets or fleams, scarificators had multiple blades that shot out with the press of a spring-loaded lever creating an instantaneous series of parallel cuts in the skin of the patient. After the cuts were made a warm glass cup (to create a vacuum) was applied to drain blood. Two of these cups are pictured on each side of the scarificator. A mandible to the left and a maxilla to the right are also pictured. An explanation of the ancient procedure of cupping can be accessed at: https://www.webmd.com/balance/guide/cupping-therapy#1 (accessed 30 October 2020). Mr. Glessan's offer of free extractions for the poor is not unknown but seldom found on early dentist's trade cards.
{"title":"Early Dental Trade Card for a Dentist & Cupper.","authors":"Ben Z Swanson, Theodore P Croll","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Very few \"Dentist AND Cupper\" trade cards are known and this is the only illustrated one known to the authors. \"Mr. Glissan, Dentist and Cupper, 147 Blackfriars Road, (London), Teeth extracted for the Poor Gratuitously.\" Above the text and in the center is a eight-sided brass boxed scarificator. Developed in the 18th century as a more humane and efficient instrument for bloodletting than lancets or fleams, scarificators had multiple blades that shot out with the press of a spring-loaded lever creating an instantaneous series of parallel cuts in the skin of the patient. After the cuts were made a warm glass cup (to create a vacuum) was applied to drain blood. Two of these cups are pictured on each side of the scarificator. A mandible to the left and a maxilla to the right are also pictured. An explanation of the ancient procedure of cupping can be accessed at: https://www.webmd.com/balance/guide/cupping-therapy#1 (accessed 30 October 2020). Mr. Glessan's offer of free extractions for the poor is not unknown but seldom found on early dentist's trade cards.</p>","PeriodicalId":73982,"journal":{"name":"Journal of the history of dentistry","volume":"69 1","pages":"69"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39306165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Humphrey Bogart's mother (Fig. 1)1 undoubtedly had a strange sense of humor. How else can one explain Maud Humphrey's bizarre image, on a stock trade card, of a lovely little lass dressed up in her Sunday best lighting the flame under a chafing dish containing two adorable kittens (Figs. 2-5)? Were kitten fondue or kitty feline stew, dishes du jour in Victorian times? Pictured here are three Victorian trade cards, related to dentistry, featuring Maud Humphrey's adorable little kitten chef. Dr. Eli H. Neiman of York, Pennsylvania, and Dr. Charles S. Decker of Binghamton, New York, chose this stock image to advertise their respective dental practices (Figs. 3 & 4), Ramon's Relief pain medication, including toothache relief, and RAMON'S LIVER PILLS AND TONIC PELLETS were available from W.E. JUDAY in West Manchester, Ohio (Figure 4). Note on the reverse of the Dr. Decker card, that for 50 cents "Vitalized Air for Painless Extracting" was offered. "Vitalized Air" was nitrous oxide altered with small amounts of chloroform and alcohol.2-4 Could it be that Maud had sniffed a bit of Vitalized Air before rendering her shocking kitty-cooking image?
亨弗莱·鲍嘉的母亲(图1)无疑有一种奇怪的幽默感。在一张股票交易卡上,一个可爱的小女孩穿着她最好的衣服,在一个装有两只可爱小猫的火锅下点燃火焰,否则我们怎么解释莫德·汉弗莱的奇怪形象(图2-5)?小猫火锅或猫咪炖肉是维多利亚时代的招牌菜吗?这是三张维多利亚时代的商业名片,与牙科有关,以莫德·汉弗莱可爱的小猫厨师为主角。宾夕法尼亚州约克的Eli H. Neiman医生和纽约州宾厄姆顿的Charles S. Decker医生选择了这张库存图片来宣传他们各自的牙科诊所(图3和图4),Ramon's止痛药,包括牙痛止痛药,以及Ramon's肝丸和补药颗粒可以在俄亥俄州西曼彻斯特的W.E. JUDAY买到(图4)。在Dr. Decker卡片的背面注明,50美分提供“无痛提取的活气”。“活化空气”是用少量氯仿和酒精改变一氧化二氮。莫德在描绘她令人震惊的小猫烹饪形象之前,会不会吸了一点活性空气?
{"title":"Victorian Era Kitten Cuisine?","authors":"Theodore P Croll, Ben Z Swanson","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Humphrey Bogart's mother (Fig. 1)<sup>1</sup> undoubtedly had a strange sense of humor. How else can one explain Maud Humphrey's bizarre image, on a stock trade card, of a lovely little lass dressed up in her Sunday best lighting the flame under a chafing dish containing two adorable kittens (Figs. 2-5)? Were kitten fondue or kitty feline stew, dishes du jour in Victorian times? Pictured here are three Victorian trade cards, related to dentistry, featuring Maud Humphrey's adorable little kitten chef. Dr. Eli H. Neiman of York, Pennsylvania, and Dr. Charles S. Decker of Binghamton, New York, chose this stock image to advertise their respective dental practices (Figs. 3 & 4), Ramon's Relief pain medication, including toothache relief, and RAMON'S LIVER PILLS AND TONIC PELLETS were available from W.E. JUDAY in West Manchester, Ohio (Figure 4). Note on the reverse of the Dr. Decker card, that for 50 cents \"Vitalized Air for Painless Extracting\" was offered. \"Vitalized Air\" was nitrous oxide altered with small amounts of chloroform and alcohol.<sup>2-4</sup> Could it be that Maud had sniffed a bit of Vitalized Air before rendering her shocking kitty-cooking image?</p>","PeriodicalId":73982,"journal":{"name":"Journal of the history of dentistry","volume":"69 1","pages":"70-72"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39306166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Musée de la Cour d'Or, Metz, France, possesses a female skull bearing a gold wire dental appliance claimed in a 1934 Dental Cosmos article on the history of dental prosthetics to be 'probably' Merovingian in origin. Inquiries in 2017 revealed current museum curators were unaware of this claim but were skeptical of such dating, suggesting scientific analysis might provide clarity. Carbon dating of a tooth from the skull was performed placing the artifact in the mid seventeenth-late eighteenth centuries, while Metz historical records reveal the find site was occupied by a convent of nuns for most of C14 dated period. Strontium isotopic analysis indicated that the woman was a local of the Metz region while fluorine analysis indicated exposure to fluoride early in life. Oral health status and the dentistry indicate the woman was of high social status.
法国梅斯的mus de la Cour d' or拥有一个女性头骨,上面有一个金丝牙科器械,1934年《牙科宇宙》(dental Cosmos)的一篇关于牙科修复术历史的文章称,这个器械“可能”起源于墨洛温王朝。2017年的调查显示,现任博物馆馆长并不知道这种说法,但对这种年代测定持怀疑态度,这表明科学分析可能会提供答案。对头骨上的一颗牙齿进行了碳年代测定,将这件文物置于17世纪中期至18世纪晚期,而梅斯的历史记录显示,在14世纪的大部分时间里,发现的地点都是一个修女修道院。锶同位素分析表明,该妇女是梅斯地区本地人,而氟分析表明,她在生命早期就接触过氟化物。口腔健康状况和牙科表明该妇女的社会地位较高。
{"title":"Female Vanity in the Early Modern Period: Evidence from the Science Based Reassessment of a Supposed Merovingian Dental Appliance.","authors":"Michael Maccheroni, Melanie Fillios, Peter Grave","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Musée de la Cour d'Or, Metz, France, possesses a female skull bearing a gold wire dental appliance claimed in a 1934 <i>Dental Cosmos</i> article on the history of dental prosthetics to be 'probably' Merovingian in origin. Inquiries in 2017 revealed current museum curators were unaware of this claim but were skeptical of such dating, suggesting scientific analysis might provide clarity. Carbon dating of a tooth from the skull was performed placing the artifact in the mid seventeenth-late eighteenth centuries, while Metz historical records reveal the find site was occupied by a convent of nuns for most of C14 dated period. Strontium isotopic analysis indicated that the woman was a local of the Metz region while fluorine analysis indicated exposure to fluoride early in life. Oral health status and the dentistry indicate the woman was of high social status.</p>","PeriodicalId":73982,"journal":{"name":"Journal of the history of dentistry","volume":"69 1","pages":"29-45"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39306160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}