RT Journal Article SR Electronic T1 Clinical practice guidelines and the overuse of health care services: need for reform JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E297 OP E298 DO 10.1503/cmaj.181496 VO 191 IS 11 A1 Jatoi, Ismail A1 Sah, Sunita YR 2019 UL http://www.cmaj.ca/content/191/11/E297.abstract