1Terruzzi V, Meucci G, Radaelli F, et al. Routine versus "on demand" sedation and analgesia for colonoscopy : a prospective randomized controlled trial [J]. Gastrointest Endosc, 2001, 54(2) : 169 -174.
2Falgel DO, Baron TH, Goldstein JL, et al. Guidelines for the use of deep sedation and general anesthesia for GI endoscopy [ J]. Gastrointest Endosc, 2002, 56(5) : 613 -617.
3Raymondos K, Panning B, Bachem I, et al. Evaluation of endoscopic retrograde cholangiopancreatography under conscious sedation and general anesthesia [J]. Endoscope, 2002, 32(9): 721 -726.
