Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ryoukichi Ikeda and Tetsuaki Kawase and Iori Takata and Yoko Suzuki and Takeshi Sato and Yukio Katori and Toshimitsu Kobayashi,Width of Patulous Eustachian Tube: Comparison of Assessment by Sonotubometry and Tubo-tympano-aerography,Otology & Neurotology,1531-7129,Ovid Technologies (Wolters Kluwer Health),2019-04,40,4,e386-e392,https://cir.nii.ac.jp/crid/1362262946102088704,https://doi.org/10.1097/mao.0000000000002141