RT Journal Article SR Electronic T1 What is the best evidence for determining harms of medical treatment? JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 645 OP 646 DO 10.1503/cmaj.051484 VO 174 IS 5 A1 Jan P. Vandenbroucke YR 2006 UL http://www.cmaj.ca/content/174/5/645.abstract