Authors: J Shepherd; D J Betteridge; P Durrington; M Laker; B Lewis; J Mann; J P Miller; J P Reckless; G R Thompson Journal: Br Med J (Clin Res Ed) Date: 1987-11-14
Authors: R Hall; C J Roberts; G A Coles; D J Fisher; F G Fowkes; J H Jones; G S Kilpatrick; J H Lazarus; M F Scanlon; J P Thomas Journal: J R Coll Physicians Lond Date: 1988-10