1. Predictive Safety Testing Consortium (PSTC), Critical Path Institute, Tucson, AZ, USA
2. Bloomberg School of Public Health, John Hopkins University, Baltimore, MD, USA
3. University of Konstanz, Konstanz, Germany
4. US Environmental Protection Agency, Research Triangle Park, NC, USA
5. Philip Morris International R&D, Neuchâtel, Switzerland
6. Harvard University, Cambridge, MA, USA
7. University of Massachusetts School of Public Health, Amherst, MA, USA