1. U.S. Geological Survey, Columbia, South Carolina 29210, United States
2. U.S. Geological Survey, Lawrenceville, New Jersey 08648, United States
3. U.S. Geological Survey, Reston, Virginia 20192, United States
4. Spirit Lake Tribe Office of Environmental Health, Fort Totten, North Dakota 58335, United States
5. Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205, United States
6. Columbia University Mailman School of Public Health, New York, New York 10032, United States
7. Missouri Breaks Industries Research Inc., Eagle Butte, South Dakota 57625, United States
8. Oglala Sioux Tribe Natural Resources Regulatory Agency, Pine Ridge, South Dakota 57770, United States
9. U.S. Environmental Protection Agency, Durham, North Carolina 27709, United States
10. U.S. Geological Survey, Lakewood, Colorado 80228-3742, United States
11. Indian Health Service/HHS, Rockville, Maryland 20857, United States
12. U.S. Geological Survey, Sacramento, California 95819, United States
13. U.S. Geological Survey, Lawrence, Kansas 66049, United States
14. U.S. Geological Survey, Boulder, Colorado 80303, United States
15. U.S. Geological Survey, Iowa City, Iowa 52240, United States
16. U.S. Geological Survey, Rapid City, South Dakota 57702, United States
17. National Institute of Environmental Health Sciences/NIH, Bethesda, Maryland 20814, United States