1. Santa Maria Family Health Unit, North Regional Health Administration, 4435-076, Rio Tinto, Portugal
2. Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, 4050-313, Porto, Portugal
3. Hospital de Magalhães Lemos, 4149-003, Porto, Portugal
4. Unit for Social and Community Psychiatry (WHO Collaborating Centre for Mental Health Services Development), Queen Mary University of London, London, E138SP, United Kingdom