<p></p>

<p>Ratko Prstacic, MD, PhD is an ENT specialist and phoniatrician at the ENT Department, University Hospital Center Zagreb, Croatia, Associate Professor at the Faculty of Education and Rehabilitation Sciences, University of Zagreb, and Assistant Professor at the School of Medicine, University of Zagreb. He graduated from the School of Medicine, University of Zagreb in 1996, completed his residency in Otorhinolaryngology and Head and Neck Surgery in 2003, and subspecialized in Phoniatrics in 2009. He obtained his PhD degree in 2014.</p> <p>He holds the position of Head of the Phoniatric Division at the ENT Department, University Hospital Centre Zagreb, Croatia.</p> <p>His main professional and research interests include phoniatrics, laryngology, rhinosinusology, and thyroid surgery.</p>

<p>Danijela Dragičević, MD, PhD is an ENT specialist and phoniatrician, Associate Professor and head of Department of Otorhinolarygology at the Faculty of medicine, University of Novi Sad, Serbia, head of Laryngology, Oncology and Phoniatrics department at Clinic for ORL and Head and neck surgery, University Clinical centre of Vojvodina, Novi Sad, Serbia. Member of UEP, EHNS. Fields of interest- phoniatry, laryngology, head and neck surgery.</p>

<p></p>