Lumbar puncture needn't be a headache.
Broadley
S A
SA
Fuller
G N
GN
D004867:Equipment Design; D006261:Headache / Q000209:etiology / Q000517:prevention & control*; D006801:Humans; D009339:Needles; D013129:Spinal Puncture / Q000009:adverse effects / Q000379:methods*