Valvular heart disease.
D000337:Aerospace Medicine; D001024:Aortic Valve Stenosis; D006331:Heart Diseases / Q000175:diagnosis; D006349:Heart Valve Diseases / Q000150:complications; D006801:Humans; D008004:Licensure; D008944:Mitral Valve Insufficiency; D008946:Mitral Valve Stenosis