RT Journal Article SR Electronic T1 Hockey concussion: Is it child abuse? JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 861 OP 862 DO 10.1503/cmaj.109-4167 VO 184 IS 8 A1 Hemond, Chris YR 2012 UL http://www.cmaj.ca/content/184/8/861.abstract