title: [Long-standing subfebrile condition].
authors.affiliation: Moscow.
authors.forename: I P
authors.initials: IP
authors.lastname: Briazgunov
mesh_terms: D001831:Body Temperature / Q000502:physiology; D005335:Fever of Unknown Origin / Q000145:classification / Q000175:diagnosis / Q000209:etiology; D006801:Humans