title: Familial atrioventricular block: predisposition not associated with the HLA system.
mesh_terms: D000368:Aged; D005260:Female; D006680:HLA Antigens; D015796:HLA-B27 Antigen; D006327:Heart Block / Q000235:genetics*; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D006680:HLA Antigens; D015796:HLA-B27 Antigen