title: Abstracts; Part I. XII. Congress of the German Society for Endoscopy. Erlangen, March 15--17, 1979.
mesh_terms: D003226:Congresses as Topic; D004724:Endoscopy / Q000379:methods*; D005860:Germany, West; D006801:Humans; D009369:Neoplasms / Q000175:diagnosis; D012958:Societies, Scientific