1. Headache after spinal anesthesia and a technique for lessening its frequency;Franksson;Acta Chir Scand,1946
2. Long-term follow-up of patients who received 10,098 spinal anesthetics;Dripps;JAMA,1954
3. Spinal (subarachnoid) block;Moore;JAMA,1966
4. Treatment of postspinal headache;Gormley;Anesthesiology,1960
5. Epidural injections of autologous blood for postlumbar-puncture headache;Giovanni;Anesth Analg,1970