HLA and ABO blood groups in blacks with mitral-valve prolapse.
D000017:ABO Blood-Group System; D044383:Black People; D006680:HLA Antigens; D006801:Humans; D008945:Mitral Valve Prolapse / Q000097:blood / Q000453:epidemiology / Q000235:genetics*; D013577:Syndrome; D014481:United States; D001741:Black or African American
D000017:ABO Blood-Group System; D006680:HLA Antigens