RT Journal Article SR Electronic T1 The authors respond: JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1647 OP 1647-a DO 10.1503/cmaj.110-2116 VO 182 IS 15 A1 Juha Varisa A1 Kristiina Kuusniemib A1 Hannu Järveläinena YR 2010 UL http://www.cmaj.ca/content/182/15/1647.2.abstract