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Scandinavian Journal of Gastroenterology. Supplement|January 1, 1984
Endoscopic biliary drainageM Classen, F HagenmüllerEndoscopy|November 1, 1991
A new pull-through trocar technique for percutaneous operative endoscopyE Frimberger, M ClassenScandinavian Journal of Gastroenterology. Supplement|January 1, 1989
Omeprazole in the acute treatment of gastric ulcerW Schepp, M ClassenZeitschrift Fur Die Gesamte Innere Medizin Und Ihre Grenzgebiete|August 15, 1979
[Therapeutic endoscopy in the gastrointestinal tract]M Classen, D WurbsSchweizerische Medizinische Wochenschrift|May 29, 1993
[Endoscopic ultrasonography--an addition to pancreas diagnosis?]T Rösch, M ClassenBritish Medical Journal|November 15, 1975
Endoscopic papillotomy and removal of gall stonesM Classen, L SafranyEndoscopy|January 1, 1984
Electronic endoscopy of the gastrointestinal tract. Initial experience with a new type of endoscope that has no fiberoptic bundle for imagingM Classen, J PhillipMedizinische Klinik (Munich, Germany : 1983)|July 15, 1997
[Palliative therapy of carcinomas of the biliary system]C Lersch, M ClassenFortschritte Der Medizin|December 20, 1994
[MALT lymphoma, stomach carcinoma--role of Helicobacter pylori. Are chances for prevention on the horizon?]C Lersch, M ClassenPageof 43