Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) PHELPS PD,Large endolymphatic sac : a congenital deformity of the inner ear shown by magnetic resonance imaging,J Laryngol Otol,,,1997,111,,754-756,https://cir.nii.ac.jp/crid/1573668924968110720,