TY - JOUR T1 - Patient characteristics not described JF - Canadian Medical Association Journal JO - CMAJ SP - 1874 LP - 1874-a DO - 10.1503/cmaj.1060078 VL - 174 IS - 13 AU - Stanley Lofsky Y1 - 2006/06/20 UR - http://www.cmaj.ca/content/174/13/1874.2.abstract ER -