1. Department of Neurology, Medical University of Bialystok, M. Sklodowskiej-Curie 24A, 15-276 Bialystok, Poland
2. Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Bialystok, M. Sklodowskiej-Curie 24A, 15-276 Bialystok, Poland
3. Department of Clinical Genetics, Medical University of Bialystok, Waszyngtona 13 15-089 Bialystok, Poland
4. Clinical Research Centre, Medical University of Bialystok, M. Sklodowskiej-Curie 24A, 15-276 Bialystok, Poland
5. Faculty of Economic Sciences, University of Warsaw, Dluga 44/50, 00-241 Warsaw, Poland