The Chemical Hazards Emergency Medical Management (CHEMM) website from the National Library of Medicine is designed for first responders and medical providers who are planning for and responding to chemical hazards events. It includes pages tailored to the individual interests of specific groups, including first responders, health care providers, mental health professionals, toxicologists, and more. The featured decision support system CHEMM Intelligent Syndromes Tool allows users to identify the chemical a patient was exposed to in a mass casualty event.
Vardell, E. Chemical Hazards Emergency Medical Management (CHEMM). Medical Reference Services Quarterly. 2012 Jan; 31(1): 73-83. http://www.ncbi.nlm.nih.gov/pubmed/22289097