RT Journal Article SR Electronic T1 Plan B comes out from behind the counter JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1645 OP 1646 DO 10.1503/cmaj.080809 VO 178 IS 13 A1 Laura Eggertson YR 2008 UL http://www.cmaj.ca/content/178/13/1645.abstract