1. ENT Department, Spitalul Clinic Municipal de Urgenta, Victor Babeş University of Medicine and Pharmacy, Bulevardul. Revolutiei No. 6, 300054 Timisoara, Romania
2. ENT Department, Victor Babeş University of Medicine and Pharmacy, 300041 Timişoara, Romania
3. Department of Microscopic Morphology, Victor Babeş University of Medicine and Pharmacy, 300041 Timişoara, Romania
4. Department of Hematology, Victor Babeş University of Medicine and Pharmacy, 300041 Timisoara, Romania
5. Department of Medical Semiology I, Victor Babeş University of Medicine and Pharmacy, 300041 Timişoara, Romania