RT Journal Article SR Electronic T1 Headache: not an ophthalmological problem? JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 123 OP 123 VO 46 IS 403 A1 O'Donnell, Niall P YR 1996 UL http://bjgp.org/content/46/403/123.1.abstract AB