RT Journal Article SR Electronic T1 Switched before birth JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E425 OP E425 DO 10.1503/cmaj.109-5346 VO 188 IS 17-18 A1 Alison Motluk YR 2016 UL http://www.cmaj.ca/content/188/17-18/E425.abstract