1 ENT department, Charles-Nicolle Hospital, Boulevard du 9-Avril 1938, 1006 Tunis, Tunisia; Faculty of medicine of Tunis, University Tunis-el-Manar, Tunis, Tunisia. Electronic address: makramtb@yahoo.com.
2 ENT department, Charles-Nicolle Hospital, Boulevard du 9-Avril 1938, 1006 Tunis, Tunisia; Faculty of medicine of Tunis, University Tunis-el-Manar, Tunis, Tunisia.