Centers for Disease Control and Prevention. (July 28, 2010). Public Health Surveillance Using Emergency Medical Service Logs-U.S.-Mexico Land Border, El Paso, Taxes, 2009. Jama Network: The Journal of the American Medical Association. Retrieved October 7, 2012 from http://jama.jamanetwork.com/mobile/article.aspx?articleid=186308      In the United States, data systems are created by the ongoing, systematic collection of health, demographic, and […]