Cluster Headache
BMJ 344:e2407, Nesbitt,A.D.,et al, 2012
Tension-Type Headache
JAMA 306:450, Pluta, R.M.,et al, 2011
Hemicrania Continua is Not That Rare
Neurol 57:948-951, Peres,M.F.P.,et al, 2001
Cluster Headache
Neurol 42 (Suppl 2) :22-31992., Mathew,N.T., 1992