TY - JOUR T1 - Inserting the levonorgestrel intrauterine system JF - Canadian Family Physician JO - Can Fam Physician SP - 643 LP - 644 VL - 53 IS - 4 AU - Catherine Caron Y1 - 2007/04/01 UR - http://www.cfp.ca/content/53/4/643.abstract N2 - ER -