TY - JOUR T1 - The HPV vaccine JF - Canadian Family Physician JO - Can Fam Physician SP - 2157 LP - 2159 VL - 53 IS - 12 AU - Michelle Howard AU - Alice Lytwyn Y1 - 2007/12/01 UR - http://www.cfp.ca/content/53/12/2157.abstract N2 - ER -