TY - JOUR T1 - CMA guidelines on MD-drug industry relations part of international trend JF - Canadian Medical Association Journal JO - CMAJ SP - 386 LP - 388 VL - 146 IS - 3 AU - J. R. Williams Y1 - 1992/02/01 UR - http://www.cmaj.ca/content/146/3/386.abstract ER -