EFFECT OF DIFFERENT OPERATION POLICIES ON MORTALITY FROM BLEEDING PEPTIC ULCERM W Dronfield, M J Langman, Mark A. Atkinson|The Lancet|1979Cited by 90
A PROSPECTIVE, RANDOMISED STUDY OF ENDOSCOPY AND RADIOLOGY IN ACUTE UPPER-GASTROINTESTINAL-TRACT BLEEDINGM W Dronfield, M J Langman, R Ferguson et al.|The Lancet|1977Cited by 84