TY - JOUR AN - 8 AU - Nelson,D.B. TI - Infectious disease complications of GI-endoscopy: Part 1: endogenous infections. JO - Gastrointest Endosc PY - 2003 VL - 57 SP - 546-556 M2 - 546 DO - 10.1067/mge.2003.139 ER -