RT Journal Article SR Electronic T1 Obesity as a risk factor for colorectal polyps in Japanese patients JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 156 OP 156 DO 10.1136/gut.53.1.156 VO 53 IS 1 A1 M Tashiro A1 T Akiyama A1 I Yoshikawa A1 K Kume A1 M Otsuki YR 2004 UL http://gut.bmj.com/content/53/1/156.1.abstract AB