RT Journal Article SR Electronic T1 Randomized clinical trials: Slow death by a thousand unnecessary policies? JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 889 OP 892 DO 10.1503/cmaj.1040884 VO 171 IS 8 A1 Yusuf, Salim YR 2004 UL http://www.cmaj.ca/content/171/8/889.abstract