1. Sense and sensibility about the barium meal;Editorial;Lancet,1980
2. The M, Langman MJS. A prospective randomised study of clinical value of the upper gastrointestinal tract roentgenoendoscopy and radiology in acute gastrointestinal bleedgram series;Arch nt Med,1980
3. ing. Lancet 1972; 1
4. Open access gastroscopy;Holdstock, G.; Wiseman, M.; Loehry, C.A.;Gastroenterology,1954
5. ; 1: 457-59. Gastroenterology 1955; 28: 378-82.