RT Journal Article SR Electronic T1 Physician billing data reveal striking gender pay gap JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1051 OP E1052 DO 10.1503/cmaj.1095894 VO 192 IS 36 A1 Wendy Glauser YR 2020 UL http://www.cmaj.ca/content/192/36/E1051.abstract