1 Service hospitalo-universitaire d'ORL and CCF, CHU de Grenoble-Alpes (CHUGA), 38043 Grenoble cedex 9, France. Electronic address: crighini@chu-grenoble.fr.
2 Service hospitalo-universitaire d'ORL and CCF, hôpital Bichat-Claude-Bernard, AP-HP, Paris, France.
3 Service hospitalo-universitaire d'ORL and CCF, CHU de Caen, Caen, France.