D L Morris, P C Hawker, S Brearley, M Simms, P W Dykes, M R Keighley et al
Morris D L, Hawker P C, Brearley S, Simms M, Dykes P W, Keighley M R et al.
Optimal timing of operation for bleeding peptic ulcer: prospective randomised trial.
Br Med J (Clin Res Ed) 1984; 288 :1277
doi:10.1136/bmj.288.6426.1277