1. Laboratory of Immunohistocytology, Salah Azaiz Cancer Institute
2. Laboratory of Immunology, Charles Nicolle Hospital
3. Department of Economic and Quantitative Methods, High School of Economic and Commercial Sciences of Tunis
4. Department of Otorhinolaryngology, Salah Azaiz Cancer Institute
5. Research Unit 01/UR/08-07, Faculty of Medicine, University of Tunis El Manar