TY - JOUR T1 - Personal protective equipment for preventing respiratory infections: What have we really learned? JF - Canadian Medical Association Journal JO - CMAJ SP - 263 LP - 263 DO - 10.1503/cmaj.060685 VL - 175 IS - 3 AU - John M. Conly Y1 - 2006/08/01 UR - http://www.cmaj.ca/content/175/3/263.abstract ER -