1. Department of Pathology Institut de Pathologie Multisite Groupement Hospitalier Sud Hospices Civils de Lyon Pierre‐Bénite France
2. Université Lyon 1 Villeurbanne France
3. Service d’Oto‐Rhino‐Laryngologie et Chirurgie Cervico‐Faciale Hôpital La Croix Rousse Hospices Civils de Lyon Lyon France
4. Department of Pathology University of Texas Southwestern Medical Center Dallas TX USA