1Centre of Neuropharmacology, Institute of Pharmacological Sciences, University of Milan, and
2Department of Pharmaceutical Sciences, University of Modena and Reggio Emilia,
3Universtiy of Texas Southwestern Medical Center at Dallas, Tex.,
4VA/UCD Sleep Laboratory, Department of Psychiatry, University of California, Davis, Calif.,
5Psychiatrische Universitätsklinik, Basel, Switzerland
6Hôtel-Dieu Sleep Center, Paris, France
7Department of Psychiatry, Erasme Hospital, University of Brussels, Belgium
8Department of Neurology, Cleveland Clinic Foundation, Cleveland, Ohio,
9IRCCS Centro San Giovanni di Dio-Fatebenefratelli, Brescia, Italy
10Department of Psychiatry, School of Medicine, University of Vienna, Austria
11Psychopharmacology Research Unit, Oxford University Department of Psychiatry, Oxford, UK
12Department of Neurobiology and Physiology, Northwestern University, Evanston, Ill. and
13University of Chicago, Ill., USA