1. Rangueil Medical School, Histology and Embryology; Toulouse III Paul Sabatier University; Toulouse Cedex France
2. Pathology and Cytology Department; CHU Toulouse; IUCT Oncopole; Toulouse Cedex 9 France
3. Otolaryngology Department, Head and Neck Surgery; CHU Toulouse; Larrey Hospital; Toulouse Cedex 9 France
4. Otolaryngology Department, Head and Neck Surgery; CHU Toulouse; IUCT Oncopole; Toulouse Cedex 9 France
5. Rangueil Medical School; Toulouse III Paul Sabatier University; Toulouse Cedex France