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Journal of Clinical Gastroenterology|October 1, 1990
Crohn's disease: what about the pancreas?M Piontek, K J Hengels, G StrohmeyerAntimicrobial Agents and Chemotherapy|July 1, 1993
Local gastric and serum amoxicillin concentrations after different oral application formsM P Cooreman, P Krausgrill, K J HengelsCancer|December 15, 1989
Assessment of cell proliferation in colorectal carcinomas using the monoclonal antibody Ki-67. Correlation with pathohistologic criteria and influence of irradiationR Porschen, B Lohe, K J Hengels, et al.Anticancer Research|November 1, 1993
Antiproliferative effect of tyrosine kinase inhibitors in epidermal growth factor-stimulated growth of human gastric cancer cellsM Piontek, K J Hengels, R Porschen, et al.Zeitschrift Fur Gastroenterologie|June 1, 1986
[Acquired immunologic deficiency syndrome (AIDS) and other sexually transmissible diseases with gastrointestinal manifestations]J Purrmann, B Miller, G StrohmeyerZeitschrift Fur Gastroenterologie|July 1, 1986
[Etiology of chronic inflammatory bowel diseases]J Purrmann, B Miller, G StrohmeyerDeutsche Medizinische Wochenschrift (1946)|October 27, 1989
[Noncirrhotic liver fibrosis after chronic arsenic poisoning]M Piontek, K J Hengels, F Borchard, et al.Zeitschrift Fur Gastroenterologie|September 1, 1989
[Nutrition and Crohn disease--an etiologic factor?]K Bielefeldt, J Purrmann, G StrohmeyerJournal of Cancer Research and Clinical Oncology|January 1, 1993
Protein kinase C and adenylate cyclase as targets for growth inhibition of human gastric cancer cellsM Piontek, K J Hengels, R Porschen, et al.Zeitschrift Fur Gastroenterologie|February 1, 1994
Hereditary hemorrhagic telangiectasia associated with multiple pulmonary arteriovenous malformations and juvenile polyposisB Schumacher, T Frieling, F Borchard, et al.Pageof 13