West Nile Virus: A Primer for the Clinician
Ann Int Med 137:173-179, Petersen,L.R. &Marfin,A.A., 2002
Self-Reported Exposure to Neurotoxic Chemical Combinations in the Gulf War:A Cross-Sectional Epidemiologic Study
JAMA 227:231-237, 2591997., Haley,R.W.&Kurt,T.L., 1997