RT Journal Article SR Electronic T1 Polypharmacy, multiple natural health products and hepatotoxicity JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1085 OP E1089 DO 10.1503/cmaj.091948 VO 183 IS 14 A1 Kosta Cvijovic A1 Heather Boon A1 Walter Jaeger A1 Sunita Vohra YR 2011 UL http://www.cmaj.ca/content/183/14/E1085.abstract