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Schweizerische Medizinische Wochenschrift|June 23, 1999
[Consensus conferences and guidelines in gastroenterology: a valid approach]J F Riemann
Digestive Diseases (Basel, Switzerland)|November 23, 2011
Colonoscopy screening: status in EuropeJ F Riemann
Strahlentherapie Und Onkologie : Organ Der Deutschen Rontgengesellschaft ... [Et Al]|November 1, 1995
[The secondary prevention of colorectal carcinoma by polyp removal]J F Riemann
Acta Hepato-Gastroenterologica|April 1, 1977
Further electron microscopic evidence of virus-like particles in Crohn's diseaseJ F Riemann
Fortschritte Der Medizin|February 5, 1981
[Differentiated therapy in Crohn's disease]J F Riemann
Zeitschrift Fur Die Gesamte Innere Medizin Und Ihre Grenzgebiete|October 15, 1989
[Endoscopic treatment of gallstones: new technics]J F Riemann
Fortschritte Der Medizin|February 24, 1977
[Diagnosis of cancer and early detection. Clinical methods]J F Riemann
Endoscopy|January 3, 2003
Diagnostic laparoscopyJ F Riemann
Fortschritte Der Medizin|November 16, 1978
[Prevention in general practice: what is dangerous for liver cells?]J F Riemann
Fortschritte Der Medizin|March 30, 1978
[Malignant tumors of the gastrointestinal tract and their early diagnosis]J F Riemann
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