1. Department of Medical Sciences, University of Milan, Endocrinology and Diabetology Unit, Fondazione IRRCS Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy
2. Belarusian State Medical University, Minsk, Belarus
3. Republic Clinical Hospital of Medical Rehabilitation, Minsk, Belarus
4. Republic Medical Rehabilitation and Balneo Treatment Centre, Minsk, Belarus
5. Bracco Medical Department, San Donato Milanese, Milan, Italy
6. Semeion Research Centre, Rome, Italy