The present status of valve replacement.
D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006349:Heart Valve Diseases / Q000601:surgery*; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D012214:Rheumatic Heart Disease / Q000601:surgery*; D013223:Statistics as Topic