TY - JOUR T1 - Why Sackett‚s analysis of randomized controlled trials fails, but needn‚t JF - Canadian Medical Association Journal JO - CMAJ SP - 834 LP - 835 VL - 163 IS - 7 AU - Stanley H. Shapiro AU - Kathleen Cranley Glass Y1 - 2000/10/03 UR - http://www.cmaj.ca/content/163/7/834.abstract ER -