1 Division of Sports Medicine, Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, California, USA Human Biology Program, School of Humanities and Sciences, Stanford University, Stanford, California, USA.
2 Department of Family and Emergency Medicine, Faculty of Medicine, Université Laval, Québec City, Québec, Canada Faculty of Medicine, Office of Education and Continuing Professional Development, Université Laval, Québec City, Québec, Canada Research Centre of the Centre Hospitalier Universitaire de Québec, Québec City, Québec, Canada.