1. GPs' classification of headache: is primary headache underdiagnosed?
by David Kernick, Sally Stapley, and William Hamilton
BJGP
Volume 58(547):
February 1, 2008
©2008 by British Journal of General Practice

2. Diagnosis of primary headache (cluster, migraine, tension-type), secondary or undifferentiated headache with age as a percentage of total cases.
Diagnosis of primary headache (cluster, migraine, tension-type), secondary or undifferentiated headache with age as a percentage of total cases. (n = ).
David Kernick et al. Br J Gen Pract 2008;58:
©2008 by British Journal of General Practice