title: [Difficulties in the differential diagnosis of primary pulmonary hypertension].
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006976:Hypertension, Pulmonary / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged
vernacular_title: O trudnostiakh differentsial'noĭ diagnostiki pervichnoĭ legochnoĭ gipertenzii.