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(a) Kaplan-Meier curve of overall 30-day mortality in COVID-19 patients with severe valvular heart disease. (b) Kaplan-Meier curve of 30-day mortality stratified by type of valvular heart disease. (c) Thirty-day mortality of aortic stenosis patients stratified by age and valve treatment (invasive [transcatheter or surgical aortic valve replacement or valvuloplasty] vs. conservative).
