1. Tests for linear trends in proportions and frequencies;Armitage, P.;Biometrics,1955
2. Prognosis of healed gastric ulcers;Barsby, B.;Lancet,1951
3. The large gastric ulcer;Branwood, A.W.;Edinb. med. J,1950
4. Factors influencing the rate of healing of gastric ulcers;Doll, R.; Pygott, F.;Lancet,1952
5. The risk of gastric cancer after medical treatment for gastric ulcer;Jones, F.Avery; Pygott, F.; Stubbe, J.L.;Gastroenterologia (Basel),1957