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- [5] GASTROINTESTINAL ENDOSCOPY IN SURGICAL PATIENTS ZENTRALBLATT FUR CHIRURGIE, 1977, 102 (14): : 844 - 850
- [7] THE CASE FOR SURGICAL TRAINING IN GASTROINTESTINAL ENDOSCOPY AMERICAN JOURNAL OF GASTROENTEROLOGY, 1984, 79 (11): : 907 - 909
- [9] THE CASE FOR SURGICAL TRAINING IN GASTROINTESTINAL ENDOSCOPY - REPLY AMERICAN JOURNAL OF GASTROENTEROLOGY, 1984, 79 (11): : 909 - 909