1. Impact of GP direct-access computerised tomography for the investigation of chronic daily headache
by Graeme C Simpson, Kirsten Forbes, Evelyn Teasdale, Alok Tyagi, and Celestine Santosh
BJGP
Volume 60(581):
December 1, 2010
©2010 by British Journal of General Practice

2. Referral pathways had direct-access not been available.
Graeme C Simpson et al. Br J Gen Pract 2010;60:
©2010 by British Journal of General Practice

3. Most common referral pathways with direct-access CT.
Graeme C Simpson et al. Br J Gen Pract 2010;60:
©2010 by British Journal of General Practice