Dural Puncture and Headache, Avoid the First but Treat the Second
BMJ 306:874-876, Reynolds,F., 1993
Subdural Haematoma as a Complication of Spinal Anaesthetic
BMJ 285:341-342, Newrick,P.,et al, 1982
Nonpositional Headache Caused by Spontaneous Intracranial Hypotension
Neurol 51:1768-1769, Schiewink,W.I.&Smith,K.A., 1998