title: Pulmonary embolism--an unsolved problem.
mesh_terms: D000328:Adult; D000368:Aged; D001344:Autopsy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011655:Pulmonary Embolism / Q000150:complications / Q000175:diagnosis / Q000401:mortality / Q000473:pathology*