1. Department of Pharmacology, Poznan University of Medical Sciences, 60-806 Poznan, Poland
2. Chair and Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, 60-355 Poznan, Poland
3. Laboratory of Environmental Research, Department of Toxicology, Poznan University of Medical Sciences, Dojazd 30 Street, 60-631 Poznan, Poland
4. Voivodal Specialistic Hospital in Olsztyn, 10-561 Olsztyn, Poland
5. Department of Otolaryngology-Head and Neck Surgery, Galilee Medical Center, Azrieli Faculty of Medicine, Bar-Ilan University, Tel Awiw 5290002, Israel
6. Department of Otorhinolaryngology Head and Neck Surgery, Edinburgh Royal Infirmary, Edinburgh EH8 9YL, UK
7. Head and Neck Service, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA
8. Department of Otolaryngology, Hospital Universitario Central de Asturias, Fundación de Investigación e Innovación Biosanitaria del Principado de Asturias, and Instituto Universitario de Oncología del Principado de Asturias, University of Oviedo, 33011 Oviedo, Spain
9. Multidisciplinary Thyroid and Parathyroid Center, Head and Neck Endocrine Surgery, Sarasota Memorial Health Care System, Sarasota, FL 34239, USA
10. Department of Head & Neck Surgery, MD Anderson Cancer Center, Houston, TX 77005, USA
11. Department of Otolaryngology Head and Neck Surgery, Harvard Medical School, Boston, MA 02114, USA
12. Coordinator of the International Head and Neck Scientific Group, 35100 Padua, Italy