RT Journal Article SR Electronic T1 On bias and transparency in the development of influential recommendations JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 335 OP 336 DO 10.1503/cmaj.051622 VO 174 IS 3 A1 Andreas Laupacis YR 2006 UL http://www.cmaj.ca/content/174/3/335.abstract