RT Journal Article SR Electronic T1 Child's play JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1210 OP 1211 DO 10.1503/cmaj.1040027 VO 170 IS 8 A1 S. Grant Bartlett YR 2004 UL http://www.cmaj.ca/content/170/8/1210.4.abstract