RT Journal Article SR Electronic T1 Arthritis charter sets patient duty to engage JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E646 OP E646 DO 10.1503/cmaj.109-4922 VO 186 IS 17 A1 Lauren Vogel YR 2014 UL http://www.cmaj.ca/content/186/17/E646.abstract AB