Material and methods Systematic electronic search of the MEDLINE-Pubmed database. Results A total of 21 studies...doi:10.1016/j.aforl.2013.06.044Castetbon, V.De Mones Del Pujol, E.Elsevier Masson SASAnnales fran?aises d\"Oto-rhino-laryngologie et de Pathologie Cervico-faciale...