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3. Optimal timing of operation for bleeding peptic ulcers: prospective randomised trial;Morris, D.L.; Hawker, P.C.; Brearley, S.;BMJ,1984
4. Somatostatin and ranitidine in the control of stigmatic haemorrhage of the upper gastrointestinal tract;Corragio, F.; Scarpato, P.; Spina, P.;BMY,1984
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