Gassert, Thomas H. MD, MSc; Hu, Howard MD, ScD, MPH; Kelsey, Karl T. MD, MOH; Christiani, David C. MD, MPH
From the Occupational Health Program, Department of Environmental Health, Harvard School of Public Health, Boston, Mass. (Dr Gassert, Dr Hu, Dr Kelsey, Dr Christiani); the Center for Occupational and Environmental Medicine, Massachusetts Respiratory Hospital, Braintree, Mass. (Dr Gassert, Dr Hu, Dr Kelsey, Dr Christiani); and the Channing Laboratory, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass.(Dr Hu, Dr Kelsey).
Address correspondence to: Thomas H. Gassert, MD, MSc, Occupational Health Program, Department of Environmental Health, Harvard School of Public Health, 665 Huntington Avenue, Boston, MA 02115.
