Upcoming Meetings 76th Annual Meeting of the American Association of Neurological Surgeons Chicago, Ill. April 26–May 1, 2008 www.aans.org/annual/2008/default.asp   14th International Meeting of the Leksell Gamma Knife Society Quebec City, Canada May 18–22, 2008 www.lgks2008.org   Biannual Meeting of the ASSFN Vancouver, Canada June 1–4, 2008 www.assfn.org   2008 Congress of Neurological Surgeons Annual Meeting Orlando, Fla. Sept. 20–25, 2008 www.neurosurgeon.org   XVIII Congress of the European Society of Stereotactic and Functional Neurosurgery (ESSFN) Rimini, Italy Oct. 5–8, 2008 www.essfn.org   15th Quadrennial Meeting of the World Society of Stereotactic and Functional Neurosurgery Toronto, Canada May 24–27, 2009 www.wssfn.org