TY - JOUR T1 - Emergency contraception JF - Canadian Medical Association Journal JO - CMAJ SP - 578 LP - 578 DO - 10.1503/cmaj.1050099 VL - 173 IS - 6 AU - Lois Cantin Y1 - 2005/09/13 UR - http://www.cmaj.ca/content/173/6/578.1.abstract ER -