1. Curriculum
in Toxicology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7310, United States
2. Department
of Environmental Sciences and Engineering, Gillings School of Global
Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7400, United States
3. Integrated
Systems Toxicology Division, National Health and Environmental Effects
Research Laboratory, U.S. Environmental Protection Agency, Research Triangle
Park, North Carolina 27711, United States
4. Center
for Environmental Medicine, Asthma, and Lung Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7310, United States
5. National
Center for Computational Toxicology, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27711, United States
6. Environmental
Public Health Division, National Health and Environmental Effects
Research Laboratory, U.S. Environmental Protection Agency, Chapel Hill, North Carolina 27711, United States