[Endoscopic interference with natural body openings].
Seifert
Hans
H
Klinik für Gostroenterologie, Hepatologie und Diabetologie, Klinikum Oldenburg.
Raab
Rudolf
R
D004724:Endoscopy / Q000009:adverse effects / Q000379:methods*; D006801:Humans; D019060:Minimally Invasive Surgical Procedures / Q000009:adverse effects / Q000379:methods*; D018570:Risk Assessment