TY - JOUR AU - Hsu, C W; Imperiale, T F TI - Meta-analysis and cost comparison of polyethylene glycol lavage versus sodium phosphate for colonoscopy preparation JO - Gastrointest Endosc VL - 48 PY - 1998 DO - 10.1016/S0016-5107(98)70191-9 L3 - PubMed-ID: 9744604 SP - 276 EP - 282 ER -