Authors: M R Keighley; D W Burdon; Y Arabi; J A Williams; H Thompson; D Youngs; M Johnson; S Bentley; R H George; G A Mogg Journal: Br Med J Date: 1978-12-16
Authors: A Kappas; N Shinagawa; Y Arabi; H Thompson; D Burdon; F Dimock; R H George; J Alexander-Williams; M R Keighley Journal: Br Med J Date: 1978-03-18