TY - JOUR T1 - Emergency contraception JF - Canadian Medical Association Journal JO - CMAJ SP - 575 LP - 575-a DO - 10.1503/cmaj.1050098 VL - 173 IS - 6 AU - Jane Farnham Y1 - 2005/09/13 UR - http://www.cmaj.ca/content/173/6/575.2.abstract ER -