Affiliation: | 1. Department of Primary Health Care, Titu Maiorescu University, , Bucharest, Romania;2. Department of Community & Occupational Health, University Medical Centre Groningen, University of Groningen, , Groningen, The Netherlands;3. Graduate School Kosice Institute for Society and Health, Medical Faculty, Safarik University, , Kosice, Slovak Republic;4. Department of Research, Ana Aslan Institute of Gerontology, , Bucharest, Romania |