1. Department of Otolaryngology/Head & Neck Surgery; University Hospital Santa Maria della Misericordia; Azienda Sanitaria Universitaria Integrata di Udine; Udine Italy
2. Department of Health Sciences; University of Genoa; Genoa Italy
3. Department of Business Economics, Health and Social care; University of Applied Science and Arts of Southern Switzerland; Manno Switzerland
4. School of Nursing and Midwifery; Trinity College Dublin; Dublin Ireland