1Professor, Department of Surgery, University of Toronto. Medical Director,
          CBI Health Group, Executive Director of the Canadian Spine Society, Toronto, ON.
          2Masters in Epidemiology, University of Toronto, Faculty of Medicine. Director of
          Clinical Research for CBI Health Group and research consultant to the Canadian Spine
          Society.
          3Family Physician practising Sport and Exercise Medicine, Toronto Rehabilitation
          Institute, University Health Network. Appointed at the University of Toronto, Department of
          Family and Community Medicine, Associate Clinical Professor.
          4Canada Research Chair in Disability Prevention and Rehabilitation; Associate
          Professor, Faculty of Health Sciences, University of Ontario Institute of Technology (UOIT);
          Director, UOIT-CMCC Centre for the Study of Disability Prevention and
          Rehabilitation.