Diagnosing the Severe Headache
Neurol 44:S6-S12, Dalessio,D.J., 1994
Acute Headache Diagnosis in Pregnant Women
Neurol 85:1024-1030, Robbins, M.S.,et al, 2015
Chronic Daily Headache
NEJM 354:158-165, Dodick,D.W., 2006
Head Pain, In Clinical Symposia
Ciba Co, Vol 46, p 2-34994., Diamond,S., 1994