Clinical Policy for the Initial Approach to Adolescents and Adults Presenting to the Emergency Department With a Chief Complaint of Headache

ACEP Clinical Policies committee and the Clinical Policies SubCommittee on Headache [American College of Emergency Physicians: Clinical policy for the initial approach to adolescents and adults presenting to the emergency department with a chief complaint of headache. Ann Emerg Med June 1996;27:821-844.]