Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) OKAMOTO YASUTAKA and 広瀬 昶 and 長谷川 篤彦,Ultrasonic Cardiography of Mitral Insufficiency in a Dog,Journal of the Japan Veterinary Medical Association,0446-6454,Japan Veterinary Medical Association,1979,32,9,499-504,https://cir.nii.ac.jp/crid/1390282679688075392,https://doi.org/10.12935/jvma1951.32.499