TY - JOUR T1 - Imperfect knowledge JF - Canadian Medical Association Journal JO - CMAJ SP - 563 LP - 563 DO - 10.1503/cmaj.081256 VL - 179 IS - 6 AU - Richard Bronson MD Y1 - 2008/09/09 UR - http://www.cmaj.ca/content/179/6/563.abstract ER -