Authors: R Williams; R Y Calne; I D Ansell; B S Ashby; P A Cullum; J L Dawson; A L Eddleston; D B Evans; P T Flute; P M Herbertson; V Joysey; A M McGregor; P R Millard; I M Murray-Lyon; J R Pena; M O Rake; R A Sells Journal: Br Med J Date: 1969-07-05