Mutations of GJB2 in three geographic isolates from northern Tunesia: evidence for the heterogeneity within isolates. - Ben Arab,S.; Hmani,M.; Denoyelle,F.; Boulila-Elgaied,A.; Chardenoux,S.; Hachicha,S.; Petit,C.; Ayadi,H. (Clin Genet, 2000)