RT Journal Article SR Electronic T1 Early childhood obesity: a call for early surveillance and preventive measures JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 243 OP 244 DO 10.1503/cmaj.1040938 VO 171 IS 3 A1 J. Douglas Willms YR 2004 UL http://www.cmaj.ca/content/171/3/243.abstract