TY - JOUR T1 - Why the surprise? JF - Canadian Medical Association Journal JO - CMAJ SP - 1746 LP - 1746 DO - 10.1503/cmaj.1060103 VL - 174 IS - 12 AU - David B. Hogan Y1 - 2006/06/06 UR - http://www.cmaj.ca/content/174/12/1746.1.abstract ER -