RT Journal Article SR Electronic T1 Chiropractic clinic offered referral kickbacks JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E522 OP E522 DO 10.1503/cmaj.109-3277 VO 182 IS 11 A1 Yoni Freedhoff YR 2010 UL http://www.cmaj.ca/content/182/11/E522.abstract