TY - GEN TI - Abstracts; Part I. XII. Congress of the German Society for Endoscopy. Erlangen, March 15--17, 1979 SN - 0013-726X PY - 1979///1227 KW - Congresses as Topic KW - Endoscopy KW - methods KW - Germany, West KW - Humans KW - Neoplasms KW - diagnosis KW - Societies, Scientific N1 - Publication Type: Congress ER -