1. Department of Pathology, North Hospital, University Hospital of St-Etienne, St-Etienne, France
2. Department of Head and Neck Surgery, North Hospital, University Hospital of St-Etienne, St-Etienne, France
3. Oncology Institute Lucien Neuwirth, St-Etienne, France
4. Department of Pneumonology, North Hospital, University Hospital of St-Etienne, St-Etienne, France