1. Institute of Public Health, Rr. “Aleksander Moisiu”, No. 80, P.O. Box 1005 Tirana, Albania
2. Department of Public Health, Faculty of Medicine, University of Medicine, Rr. “Dibres”, No. 371, P.O. Box 1005 Tirana, Albania
3. Department of Biomedical and Experimental Sciences, Faculty of Medicine, University of Medicine, Rr. “Dibres”, No. 371, P.O. Box 1005 Tirana, Albania
4. Department of International Health, CAPHRI (Care and Public Health Research Institute), Maastricht University, 6200 MD Maastricht, The Netherlands
5. University Hospital Center “Mother Teresa”, Rr. “Dibres”, No. 370, P.O. Box 1005 Tirana, Albania
6. Department of Healthcare, Faculty of Health, University of Vlora, P.O. Box 9401 Vlora, Albania
7. School of Medicine, University of Crete, P.O. Box 71003 Crete, Greece