1. Department of Medicine, Faculty of Medicine, University of Malaga, Malaga, Spain
2. Centro de Investigaciones Médico-Sanitarias (C.I.M.E.S), General Foundation University of Malaga, Malaga, Spain
3. Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA
4. Department of Endocrinology, Carlos Haya Hospital, Malaga, Spain
5. The Iowa Consortium for Substance Abuse Research and Evaluation, University of Iowa, Iowa City, IA, USA
6. Department of Neurology, Carver College of Medicine, The University of Iowa, Iowa City, IA, USA