Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) MACHIDA NOBORU and OKAMOTO YOSHIHARU and MINAMI SABURO and YAMAGA YOSHINORI and KAGOTA KATSUMOTO,Cardiac Arrhythmias in Normal Holstein Heifers,Journal of the Japan Veterinary Medical Association,0446-6454,Japan Veterinary Medical Association,1991,44,12,1176-1179,https://cir.nii.ac.jp/crid/1390001204708263168,https://doi.org/10.12935/jvma1951.44.1176