[Statistics of epidural anesthesia--with special reference to upper abdominal surgery].
D000293:Adolescent; D000328:Adult; D000368:Aged; D000768:Anesthesia, General; D000775:Anesthesia, Spinal; D002648:Child; D005260:Female; D005767:Gastrointestinal Diseases / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013223:Statistics as Topic