1. Department of Public Health Policy, School of Public Health, University of West Attica, 196 Alexandras Avenue, 11521 Athens, Greece
2. Department of Nutrition and Dietetics, Hellenic Mediterranean University, 72300 Sitia, Greece
3. Department of Rheumatology and Clinical Immunology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41110 Larissa, Greece
4. Open Elderly Care Center, Municipality of Keratsini-Drapetsona, 18756 Athens, Greece