TY - JOUR T1 - Roles of nurse practitioners and physician assistants in medicine still under debate JF - Canadian Medical Association Journal JO - CMAJ SP - E203 LP - E204 DO - 10.1503/cmaj.109-5708 VL - 191 IS - 7 AU - Brian Owens Y1 - 2019/02/19 UR - http://www.cmaj.ca/content/191/7/E203.abstract ER -