[1] Univ Paris 05, Sorbonne Paris Cite, Hop Europeen Georges Pompidou,HEGP, AP HP,Serv Otorhinolaryngol & Chirurg Cervicofaci, 20-40 Rue Leblanc, F-75015 Paris 15, France
[2] 30 Rue Faidherbe, F-75011 Paris, France
[3] CHU St Etienne, Serv ORL, F-42055 St Etienne, France