[A method of differential diagnosis by ratio of frequencies (author's transl)].
D000368:Aged; D001554:Benzene / Q000633:toxicity; D002543:Cerebral Hemorrhage / Q000175:diagnosis; D003937:Diagnosis, Differential; D004938:Esophageal Neoplasms / Q000175:diagnosis; D006801:Humans; D002542:Intracranial Embolism and Thrombosis / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D013223:Statistics as Topic
D001554:Benzene