1 ENT and head and neck surgery department, university hospital center, place du Docteur-Baylac, TSA 40031, 31059 Toulouse cedex 9, France.
2 Pediatric ENT and head and neck surgery department, Necker-Enfants-Malades university hospital, 149, rue de Sèvres, 75015 Paris, France. Electronic address: [email protected].
3 ENT and head and neck surgery department, Huriez hospital, Lille regional university hospital, 59000 Lille, France.