1. Department of Otorhinolaryngology and Maxillofacial Surgery, Faculty of Medicine, Lariboisière Saint-Louis, University of Paris VII, Hôpital Saint-Louis, Paris
2. Department of Pediatric Ear, Nose, and Throat and Head and Neck Surgery, Paris, France
3. Department of Pathology, Armand Trousseau's Children's Hospital, Paris, France