Outcome of endoscopy and barium radiography for acute upper gastrointestinal bleeding: controlled trial in 1037 patients
内镜和钡剂造影治疗急性上消化道出血的疗效:一项纳入1037例患者的对照试验
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doi:10.1136/bmj.284.6315.545
Dronfield, M W; Langman, M J; Atkinson, M; Balfour, T W; Bell, G D; Vellacott, K D; Amar, S S; Knapp, D R