Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Okumura Ken and Metoki Norifumi and Hagii Jyoji,Epidemiology and Severity of Cardioembolic Stroke,Japanese Journal of Electrocardiology,0285-1660,Japanese Heart Rhythm Society,2011,31,3,292-296,https://cir.nii.ac.jp/crid/1390282679750869504,https://doi.org/10.5105/jse.31.292