TY - JOUR T1 - The evolution of clinical trials: inclusion and representation JF - Canadian Medical Association Journal JO - CMAJ SP - 1373 LP - 1374 VL - 159 IS - 11 AU - P. A. Rochon AU - P. B. Berger AU - M. Gordon Y1 - 1998/12/01 UR - http://www.cmaj.ca/content/159/11/1373.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -