RT Journal Article SR Electronic T1 Enforcement of natural health product regulations JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 326 OP 327 DO 10.1503/cmaj.112-2022 VO 184 IS 3 A1 Harrington, Gerry YR 2012 UL http://www.cmaj.ca/content/184/3/326.3.abstract