RT Journal Article SR Electronic T1 Human papillomavirus and anogenital warts in children JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 321 OP 321 DO 10.1503/cmaj.111021 VO 184 IS 3 A1 Amy Ornstein A1 Todd Hatchette YR 2012 UL http://www.cmaj.ca/content/184/3/321.abstract