%0 Journal Article %A FaZhou Wang %A XiaoFeng Shen %A XiRong Guo %A YuZhu Peng %T Oral contraceptives and risk of gallbladder disease %D 2011 %R 10.1503/cmaj.111-2065 %J Canadian Medical Association Journal %P 1517-1517 %V 183 %N 13 %U https://www.cmaj.ca/content/cmaj/183/13/1517.2.full.pdf