1. Healthy Active Living and Obesity Research Group, Children’s Hospital of Eastern Ontario Research Institute, 401 Smyth Road, Ottawa, ON K1H 8L1, Canada.
2. Faculty of Physical Education and Recreation, University of Alberta, W1-16h Van Vliet Centre, Edmonton, AB T6G 2H9, Canada.
3. School of Kinesiology and Health Studies, Queen’s University, 28 Division St., Kingston, ON K7L 3N6, Canada.
4. Office of the Task Force on Preventive Health Care, Public Health Agency of Canada, 785 Carling Avenue, Ottawa, ON K1A 0K9, Canada.
5. Department of Pediatrics, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4L8, Canada.
6. Department of Physical Medicine and Rehabilitation, Johns Hopkins University, 600 North Wolfe Street, Baltimore, MD 21202, USA.