1. BioSimulation Consulting Inc., Newark, DE, USA, 19713
2. Department of Environmental and Occupational Health, University of Montreal, Quebec, Canada H3N 1X9
3. National Institute of Environmental Health Sciences, National Toxicology Program, Research Triangle Park, NC, USA
4. National Health and Environmental Effects Research Laboratory, U.S. Environmental protection Agency, Research Triangle Park, NC, USA, 27711
5. National Cancer Institute, Research Triangle Park, NC, USA, 27709