Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) BATCHELOR WB,"Contemporary outcome trends in the elderly undergoing percutaneous coronary interventions : results in 7,472 octogenarians",J Am Coll Cardiol,,,2000,36,,723-730,https://cir.nii.ac.jp/crid/1574231875341262976,