1. ENT Department, ‘George Emil Palade’ University of Medicine, Pharmacy, Science and Technology, 540139 Targu Mures, Romania
2. ENT Department, Bucharest Emergency University Hospital, 010271 Bucharest, Romania
3. Department of Pathology, ‘Carol Davila’ University of Medicine and Pharmacy, 020021 Bucharest, Romania
4. Department of Anatomy, ‘Carol Davila’ University of Medicine and Pharmacy, 050474 Bucharest, Romania