TY - JOUR T1 - Tdap vaccine during pregnancy JF - Canadian Family Physician JO - Can Fam Physician SP - 726 LP - 726 VL - 59 IS - 7 AU - Judy MacDonald Y1 - 2013/07/01 UR - http://www.cfp.ca/content/59/7/726.1.abstract N2 - ER -