RT Journal Article SR Electronic T1 The roles of experience, participation rates and judgment in the injury rates of weekend warriors JF Canadian Journal of Surgery JO CAN J SURG FD Canadian Medical Association SP E1 OP E2 DO 10.1503/cjs.011114 VO 58 IS 1 A1 Heshka, Jon A1 Jackson, Jeff YR 2015 UL http://canjsurg.ca/content/58/1/E1.abstract