1. Stella E. Hines, MD, MSPH, is Assistant Professor; Marc Oliver, RN, MPH, MBA, is a Research Nurse; Patricia Gucer, PhD, is Assistant Professor; Tracy Roth, RN, is a Research Nurse; and Melissa McDiarmid, MD, MPH, DABT, is Director; all in the Division of Occupational and Environmental Medicine, Department of Medicine, School of Medicine, University of Maryland–Baltimore, Baltimore, MD.
2. Clayton Brown, PhD, is Professor, Department of Epidemiology and Public Health, Division of Biostatistics and Bioinformatics, School of Medicine, University of Maryland–Baltimore.
3. Melissa Frisch, MD, MPH, is an Occupational and Environmental Medicine physician; Regina Hogan, RN, MS, is Manager, Employee Health Services; and James Chang, CIH, is Safety Officer; all at the University of Maryland Medical Center, Baltimore, MD.