RT Journal Article SR Electronic T1 Do nurse practitioners pose a threat to family physicians? JF Canadian Family Physician JO Can Fam Physician FD The College of Family Physicians of Canada SP 1668 OP 1670 VO 54 IS 12 A1 Guylaine Laguë YR 2008 UL http://www.cfp.ca/content/54/12/1668.abstract AB