Spinal anaesthesia.
D000775:Anesthesia, Spinal / Q000009:adverse effects*; D000776:Anesthesiology / Q000331:legislation & jurisprudence*; D005260:Female; D006801:Humans; D008318:Malpractice / Q000331:legislation & jurisprudence*; D008875:Middle Aged; D006113:United Kingdom