Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) "Takasaki, Noboru and Kotani, Tamon and Miyazaki, Shigeru and Saitou, Sougo",Measurement of coefficient of variation of R-R interval in ECG for patients with impotence,Hinyokika Kiyo,0018-1994,泌尿器科紀要刊行会,1989-08,35,8,1361-1364,https://cir.nii.ac.jp/crid/1050282677154060160,