1. DEPARTMENT OF PHARMACOLOGY, POZNAN UNIVERSITY OF MEDICAL SCIENCES, POZNAN, POLAND; CHAIR AND DEPARTMENT OF ENDOCRINOLOGY, METABOLISM AND INTERNAL MEDICINE, POZNAN UNIVERSITY OF MEDICAL SCIENCES, POZNAN, POLAND
2. CHAIR AND DEPARTMENT OF ENDOCRINOLOGY, METABOLISM AND INTERNAL MEDICINE, POZNAN UNIVERSITY OF MEDICAL SCIENCES, POZNAN, POLAND
3. COORDINATOR OF THE INTERNATIONAL HEAD AND NECK SCIENTIFIC GROUP, 35100 PADUA, ITALY