Pub Date : 1959-10-01DOI: 10.1016/S0368-2242(59)80053-1M.B., B.S. B. Beveridge (Medical Registran), M.B., Ch.B., D.M.R.D., F.F.R., M.C.R.A. B.F. Vaughan (Radiologist), M.B., B.S. M.N.I. Walters (Lecturer in Pathology, University of Western Australia)