[1] McMaster Univ, Fac Hlth Sci, Hamilton, ON L8S 4K1, Canada
[2] Univ Waterloo, Dept Kinesiol, Waterloo, ON N2L 3G1, Canada
[3] McMaster Univ, Dept Pediat, Hamilton, ON L8S 4K1, Canada
[4] McMaster Univ, Dept Med, Charlton Med Ctr, Hamilton, ON L8N 1Y2, Canada
[5] McMaster Univ, Dept Civil Engn, Hamilton, ON L8S 4K1, Canada
[6] McMaster Univ, Dept Med, Hamilton, ON L8S 4K1, Canada