1. Department of Physiology, University of Toronto, Toronto, Ontario, Canada
2. Division of Endocrinology, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
3. Pôle d’endocrinologie, diabète et nutrition, Institut de recherche expérimentale et clinique, Université catholique de Louvain, Brussels, Belgium
4. Department of Genetic Medicine and Development, Faculty of Medicine, University of Geneva, Geneva, Switzerland