1. Laboratory of Physiology (G.C., K.S.), Université Libre de Bruxelles, B-1070 Brussels, Belgium
2. Service of Endocrinology of Erasme Hospital (G.C., J.M.), Université Libre de Bruxelles, B-1070 Brussels, Belgium
3. Department of Medicine (A.N., R.L., L.L.M., R.E.W., E.V.C.), University of Chicago, Chicago, Illinois 60637
4. Service of Endocrinology (L.L.M., E.M.), Università di Pisa, 56124 Pisa, Italy
5. Institut National de la Santé et de la Recherche Médicale/Université Claude Bernard Lyon 1-Unité 628 (K.S.), Integrated Physiology of Brain Arousal Systems, 69373 Lyon, France
6. Service of Endocrinology (J.-J.L.), Centre Hospitalier Régional de la Citadelle, Université de Liège, 4000 Liège, Belgium