Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) PAI RG,Malignant natural history of asymptomatic severe aortic stenosis : Benefit of aortic valve replacement,Ann Thorac Surg,,,2006,82,,2116-2122,https://cir.nii.ac.jp/crid/1574231875937753472,