Operational factors in microscopic neurosurgery.
D001921:Brain / Q000601:surgery*; D004564:Electrocoagulation; D006801:Humans; D002532:Intracranial Aneurysm / Q000601:surgery; D008029:Lighting; D008297:Male; D008722:Methods; D008853:Microscopy; D008866:Microsurgery; D008875:Middle Aged; D013525:Surgical Instruments; D014785:Vision, Ocular; D014794:Visual Fields