Experience in the Diagnosis of Headaches That Start in Elderly People
JNNP 57:1255-1257, Pascual,J.&Berciano,J., 1994
Diagnosing the Severe Headache
Neurol 44:S6-S12, Dalessio,D.J., 1994
Prevalence of Headache and Migraine in Schoolchildren
BMJ 309:765-769, Abu-Arefeh,I.&Russell,G., 1994