[1] Univ Alberta, Fac Med & Dent, Dept Pediat, Edmonton, AB, Canada
[2] Univ Alberta, Fac Phys Educ & Recreat, Edmonton, AB, Canada
[3] Univ Alberta, Fac Extens, Edmonton, AB, Canada
[4] Univ British Columbia, Dept Pediat, Endocrinol & Diabet Unit, Vancouver, BC, Canada
[5] McMaster Univ, Dept Pediat, Hamilton, ON, Canada
[6] McMaster Univ, Populat Hlth Res Inst, Hamilton, ON, Canada
[7] McGill Univ, Montreal Childrens Hosp, Dept Pediat, Montreal, PQ, Canada
[8] Univ Alberta, Fac Med & Dent, Dept Med, Edmonton, AB, Canada