1. Department of Medicine and Diabetology, Saint John’s Hospital, Budapest, Hungary and Department of Health Sciences, Faculty of Health Care, University of Miskolc, Miskolc, Hungary
2. Department of Medicine, Petz County Teaching Hospital, Győr, Hungary
3. Centre for Medicine, Diabetology and Metabolism, Veszprém County Csolnoky Hospital, Veszprém, Hungary
4. National Institute for Primary Health Care, Budapest, Hungary
5. Department of Medicine, Bajcsy-Zsilinszky Hospital, Budapest, Hungary