Commentary: Controversies in SIGN guidance on diagnosing and managing headache in adults.
Elrington
Giles
G
Barts and The London NHS Trust, London E1 1BB. elrington@aol.com
D000328:Adult; D020773:Headache Disorders / Q000175:diagnosis* / Q000628:therapy*; D006801:Humans; D017410:Practice Guidelines as Topic