RT Journal Article SR Electronic T1 Updated CMAJ policy on undisclosed competing interests JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E116 OP E117 DO 10.1503/cmaj.190080 VO 191 IS 5 A1 Diane Kelsall YR 2019 UL http://www.cmaj.ca/content/191/5/E116.abstract