Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Fujita Machiko,Fundamental Frequency and Sound Pressure Level of Voice in Dysphonia Patients.,Koutou (THE LARYNX JAPAN),0915-6127,The Japan Laryngological Association,1989,1,2,115-121,https://cir.nii.ac.jp/crid/1390282680438584960,https://doi.org/10.5426/larynx1989.1.2_115