title: Directed functional endoscopic sinus surgery and headaches.
authors.forename: B J
authors.initials: BJ
authors.lastname: Ferguson
mesh_terms: D004724:Endoscopy; D006261:Headache / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D019060:Minimally Invasive Surgical Procedures; D010256:Paranasal Sinuses / Q000601:surgery*; D014057:Tomography, X-Ray Computed