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Bailliere'S Clinical Gastroenterology|December 1, 1994
Endosonographic possibilities in the pancreatobiliary areaT Rösch, M ClassenEndoscopy|November 1, 1987
Endoprosthesis and local irradiation in the treatment of biliary malignanciesM Classen, F HagenmüllerZeitschrift Fur Gastroenterologie|July 1, 1992
[Endosonography in gastroenterology--an intermediate evaluation]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 ClassenZeitschrift Fur Die Gesamte Innere Medizin Und Ihre Grenzgebiete|October 1, 1991
[Diabetes mellitus and arterial hypertension. In search of the connecting link]P Bottermann, M ClassenPageof 90