[Comparison among conventional 4 L polyethylene glycol, split method of 4 L polyethylene glycol and combination of 2 L polyethylene glycol and sodium phosphate solution for colonoscopy preparation].

So Young Jo, Nayoung Kim, Jung Won Lee, Ji Hwan Lim, Chiun Choi, Ilyoung Chon, Ho Kil, Bo Young Min, Young Sang Byoun, Ban Seok Lee, Sang Eon Jang, Hyun Kyung Park, Hyun Jin Jo, Cheol Min Shin, Sang Hyup Lee, Young Soo Park, Jin-Hyeok Hwang, Jin-Wook Kim, Sook-Hyang Jeong and Dong Ho Lee Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Seoul National University College of Medicine, Seoul, Korea