[Clinical study of subarachnoidal hemorrhage---with special reference to the cases of unknown etiology].
D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D013345:Subarachnoid Hemorrhage / Q000134:cerebrospinal fluid / Q000175:diagnosis / Q000209:etiology* / Q000401:mortality