title: [Difficulties in diagnosing subacute forms of bacterial endocarditis in middle-aged and aged patients].
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D004698:Endocarditis, Subacute Bacterial / Q000175:diagnosis*; D006801:Humans; D008875:Middle Aged
vernacular_title: Trudnosti diagnostiki podostrykh form bakterial'nogo endokardita u lits pozhilogo i starcheskogo vozrasta.