1. Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
2. Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, New York
3. Retired U.S. Public Health Service, Tuba City, Arizona
4. Texas Biomedical Research Institute, San Antonio, Texas
5. Department of Medicine, and
6. Center for American Indian Health Research, University of Oklahoma Health Sciences Center, College of Public Health, Oklahoma City, Oklahoma
7. Missouri Breaks Industries Research, Inc., Eagle Butte, South Dakota
8. Department of Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland
9. Division of Pulmonary, Allergy, and Critical Care Medicine, Columbia University Irving Medical Center, New York, New York
10. Department of Epidemiology, Columbia University Mailman School of Public Health, New York, New York