1 Department of Otolaryngology and Head and Neck Surgery, Hôpital d'Instruction des Armées Sainte Anne, 83800 Toulon, France. Electronic address: jbmorvan@hotmail.com.
2 Department of Otolaryngology and Head and Neck Surgery, Laveran Army Training Hospital, 13013 Marseille, France.
3 Department of Otolaryngology and Head and Neck Surgery, Hôpital d'Instruction des Armées Sainte Anne, 83800 Toulon, France.
4 Neurosurgery Department, Sainte Anne Army Training Hospital, 83800 Toulon, France.
5 Hyperbaric Medicine Service and Expertise in Scuba Diving, Sainte Anne Army Training Hospital, 83800 Toulon, France.