1. Agència Salut Pública de Barcelona, Barcelona, Spain
2. Training Unit in Preventive Medicine and Public Health PSMar-UPF-ASPB, Barcelona, Spain
3. Universitat Pompeu Fabra, Barcelona, Spain
4. CIBER Epidemiologia y Salud Pública (CIBERESP), Madrid, Spain
5. Institute of Biomedical Reserach (IIB-Sant Pau), Barcelona, Spain
6. School of Public Health, University of Michigan, USA
7. Department of Psychobiology and Methodology of Health Sciences, Universitat Autonòma de Barcelona, Spain
8. Primary Care Health Center El Carmel, Barcelona, Spain