1. http://www.dhs.gov/xabout/laws/gc_1219263961449.shtm 2009
2. Syndromic surveillance practice in the United States: findings from a survey of state, territorial, and selected local health departments;Buehler;Advances in Disease Surveillance,2008
3. Shmueli G Burkom HS www.rhsmith.umd.edu/faculty/gshmueli/web/images/statchallengesbiosurveillancerevised-iii.pdf 2009
4. Framework for the development of response protocols for public health syndromic surveillance systems: case studies of 8 US states;Uscher-Pines;Disaster Medicine and Public Health Preparedness,2009
5. Green M Syndromic surveillance for detecting bioterrorist events-the right answer to the wrong question? 2008