title: CARDIAC FAILURE WITHOUT OBVIOUS CAUSE.
mesh_terms: D001281:Atrial Fibrillation; D003937:Diagnosis, Differential; D006333:Heart Failure; D006801:Humans; D006980:Hyperthyroidism; D009205:Myocarditis
keywords: AURICULAR FIBRILLATION; DIAGNOSIS, DIFFERENTIAL; HEART FAILURE, CONGESTIVE; HYPERTHYROIDISM; MYOCARDITIS