1. Nova Medical School/Faculdade de Ciências Médicas Universidade Nova de Lisboa Lisbon Portugal
2. Comprehensive Health Research Centre (CHRC) Lisbon Portugal
3. Department of Human Development and Family Studies Penn State University University Park Pennsylvania USA
4. Centre of Statistics and its Applications University of Lisbon (CEAUL) Lisbon Portugal
5. Department of Psychiatry University of Santiago de Compostela (USC) Santiago de Compostela Spain
6. Psychogeriatric Unit CHUS University Hospital Santiago de Compostela Spain