{"title":"Maintenance immunotherapy in ragweed hay fever. Booster injections at six week intervals.","authors":"P S Norman, W L Winkenwerder, L M Lichtenstein","doi":"","DOIUrl":null,"url":null,"abstract":"","PeriodicalId":22575,"journal":{"name":"The Journal of allergy","volume":"47 5","pages":"273-82"},"PeriodicalIF":0.0000,"publicationDate":"1971-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Journal of allergy","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}