RT Journal Article SR Electronic T1 Number of births to maintain competence. JF Canadian Family Physician JO Can Fam Physician FD The College of Family Physicians of Canada SP 751 OP 751 VO 48 IS 4 A1 Society of Obstetricians and Gynaecologists of Canada A1 College of Family Physicians of Canada A1 Society of Rural Physicians of Canada YR 2002 UL http://www.cfp.ca/content/48/4/751.abstract AB