1. Thyroid and Parathyroid Surgery Service (Head Dott. Loredana De Pasquale)-Otolaryngology Unit (Head: Professor Giovanni Felisati), ASST Santi Paolo e Carlo, Department of Health Sciences, Università Degli Studi di Milano, Via A. di Rudinì, 8, Milan 20142, Italy
2. Department of Surgical Science, “Sapienza” University of Rome, Rome 00161, Italy
3. Otolaryngology Unit (Head: Professor Giovanni Felisati), ASST Santi Paolo e Carlo, Department of Health Sciences, Università Degli Studi di Milano, Via A. di Rudinì, 8, Milan 20142, Italy