Roberto Valcavi, MD, The Endocrine and Thyroid Clinic of Reggio, Reggio Emilia, ItalyErivelto Volpi, MD, PhD, Department of Oncology, Hospital Alemao Oswaldo Cruz, Sao Paulo, BrazilGregory Randolph, MD, Division of Thyroid and Parathyroid Endocrine Surgery, Department of Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USAJuan Pablo Duenas, MD, Department of Surgery, Comprehensive Endocrine surgery Clinic, Medellin, Colombia