TY - JOUR T1 - Oral contraceptives and risk of gallbladder disease JF - Canadian Medical Association Journal JO - CMAJ SP - 1517 LP - 1517 DO - 10.1503/cmaj.111-2065 VL - 183 IS - 13 AU - FaZhou Wang AU - XiaoFeng Shen AU - XiRong Guo AU - YuZhu Peng Y1 - 2011/09/20 UR - http://www.cmaj.ca/content/183/13/1517.2.abstract ER -