title: Valve replacement for aortic regurgitation: factors influencing results.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001021:Aortic Valve / Q000601:surgery*; D001022:Aortic Valve Insufficiency / Q000145:classification / Q000209:etiology / Q000601:surgery*; D005260:Female; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012306:Risk; D013997:Time Factors