1. Clinical clues and clinical rules: primary vs secondary headache;Dodick;Advances in the Study of Medicine,2003
2. The utility of neuroimaging in the evaluation of headache in patients with normal neurologic examinations;Frishberg;Neurology,1994
3. Headache in women;Johnson;Primary Care: Clinics in Office Practice,2004
4. The many causes of headache: migraine, vascular, drug-induced, and more;Levin;Postgraduate Medicine,2002
5. The patient with daily headaches;Maizels;American Family Physician,2004