1. Department of Psychiatry, University Hospital of Bellvitge, Barcelona, Spain.
2. CIBER Fisiopatología Obesidad y Nutrición (CIBERObn), Instituto Salud Carlos III, Spain.
3. Psychiatric Liaison Unit, University Hospitals of Geneva, Geneva, Switzerland.
4. Laboratori d'Estadistica Aplicada, Departament de Psicobiologia i Metodologia, Universitat Autònoma de Barcelona, Spain.
5. NetUnion, Lausanne, Switzerland.