THE RELATIVE FREQUENCY OF RHEUMATIC VALVE DEFECTS IN NORTH DAKOTA.
D001024:Aortic Valve Stenosis; D006349:Heart Valve Diseases; D006801:Humans; D008944:Mitral Valve Insufficiency; D008946:Mitral Valve Stenosis; D009658:North Dakota; D012214:Rheumatic Heart Disease; D013223:Statistics as Topic
AORTIC VALVE STENOSIS; HEART VALVE DISEASES; MITRAL VALVE INSUFFICIENCY; MITRAL VALVE STENOSIS; NORTH DAKOTA; RHEUMATIC HEART DISEASE; STATISTICS