1Department of Pathology & Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, 30322, USA
2Department of Pathology and Laboratory Medicine, and
3Department of Neurology, Emory University School of Medicine, Atlanta, GA 30322;
4Department of Environmental and Occupational Health, Rollins Public School of Health, Emory University, Atlanta, GA 30322;
5Department of Chemistry, Georgia State University, Atlanta, GA 30302;
6Centers for Disease Control and Prevention, Atlanta, GA 30322;
7Centers for Disease Control and Prevention, Atlanta, GA 30322; and
8Neuropsychiatric Institute, Medical Retardation Research Center, University of California, Los Angeles, Los Angeles, CA 90095
