RT Journal Article SR Electronic T1 Human papillomavirus, vaccines and women's health: questions and cautions JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 484 OP 487 DO 10.1503/cmaj.070944 VO 177 IS 5 A1 Abby Lippman, PhD A1 Ryan Melnychuk, PhD A1 Carolyn Shimmin, BJ A1 Madeline Boscoe, RN DU YR 2007 UL http://www.cmaj.ca/content/177/5/484.abstract