Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ishikawa Kinji and Kanamasa Ken and Hama Junkichi and Ogawa Iwao and Takenaka Toshihiko and Kimura Akio and Katori Ryo,Prevention of cardiac events by .BETA.-blocking agents in elderly patients after myocardial infarction.,Nippon Ronen Igakkai Zasshi. Japanese Journal of Geriatrics,03009173,The Japan Geriatrics Society,1997,34,4,273-277,https://cir.nii.ac.jp/crid/1390282679998767104,https://doi.org/10.3143/geriatrics.34.273