The difference between zero and one.
D000293:Adolescent; D000328:Adult; D001927:Brain Diseases / Q000175:diagnosis*; D003951:Diagnostic Errors; D005260:Female; D005554:Forensic Medicine; D006708:Homicide; D006801:Humans; D006850:Hydrocephalus, Normal Pressure / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D009460:Neurologic Examination; D009493:Neurosurgery; D010686:Philosophy, Medical; D013119:Spinal Cord Injuries / Q000503:physiopathology