TY - JOUR T1 - Varenicline: quantifying the risk JF - Canadian Medical Association Journal JO - CMAJ SP - 1404 LP - 1404 DO - 10.1503/cmaj.111-2063 VL - 183 IS - 12 AU - Hisato Takagi AU - Takuya Umemoto Y1 - 2011/09/06 UR - http://www.cmaj.ca/content/183/12/1404.2.abstract ER -