TY - JOUR AU - McQuaid, K R; Laine, L TI - A systematic review and meta-analysis of randomized, controlled trials of moderate sedation for routine endoscopic procedures JO - Gastrointest Endosc VL - 67 PY - 2008 DO - 10.1016/j.gie.2007.12.046 SP - 910 EP - 923 ER -