1. Department of Biomedical Informatics, Harvard Medical School, Boston, Massachusetts 02115;
2. National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina 27709;
3. Center for Systems Genomics, The Pennsylvania State University, College Station, Pennsylvania 16802
4. Environmental Engineering Laboratory, Department of Chemical Engineering, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
5. Department of Biological Sciences, College of Sciences, North Carolina State University, Raleigh, North Carolina 27695
6. Geisinger Health System, Danville, Pennsylvania 17821
7. Renaissance Computing Institute, Chapel Hill, North Carolina 27517
8. Division of Biostatistics, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California 90089-9011
9. Departments of Biological Sciences and Computing Science, University of Alberta, Edmonton, Alberta T6G 2E8, Canada
10. Center for Assessment Technology and Continuous Health, Massachusetts General Hospital, Boston, Massachusetts 02114