TY - JOUR T1 - Morphine in breast milk JF - Canadian Family Physician JO - Can Fam Physician SP - 1005 LP - 1005 VL - 53 IS - 6 AU - Mitch Young Y1 - 2007/06/01 UR - http://www.cfp.ca/content/53/6/1005.1.abstract N2 - ER -