TY - JOUR T1 - Emergency contraception could lower abortion rate JF - Canadian Medical Association Journal JO - CMAJ SP - 1903 LP - 1903-a DO - 10.1503/cmaj.1040867 VL - 170 IS - 13 AU - Barbara Sibbald Y1 - 2004/06/22 UR - http://www.cmaj.ca/content/170/13/1903.2.abstract ER -