1. Department of Internal Medicine and Endocrinology; Medical University of Warsaw; Warsaw Poland
2. Department of Medical Genetics; Centre for Biostructure; Medical University of Warsaw; Warsaw Poland
3. Department of Internal Medicine; Erasmus Medical Center; Rotterdam The Netherlands
4. Istituto di Ricerca Genetica e Biomedica (IRGB); Consiglio Nazionale delle Ricerche; c/o Cittadella Universitaria di Monserrato; Monserrato Cagliari Italy
5. Dipartimento di Scienze Biomediche; Universita di Sassari; Sassari Italy