The relationship of operative position to the incidence of postspinal headache.
D000758:Anesthesia; D000775:Anesthesia, Spinal / Q000150:complications*; D000776:Anesthesiology; D006261:Headache; D006801:Humans; D015994:Incidence; D051299:Post-Dural Puncture Headache; D013514:Surgical Procedures, Operative / Q000150:complications*
ANESTHESIA, SPINAL/complications; HEADACHE; SURGERY, OPERATIVE/complications