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- Problems in gastrointestinal endoscopy / edit. Philip E. Donahue, Lloyd M. Nyhus, Catherine Judge - Philadelphia : Lippincott , 1990 - 7, 214 s. (Problems in general surgery; Vol. 7, No. 5, Special Issue 1990) ISBN 0-397-51163-9 [1, currently available 1]
- Chapters, articles