1. Chromatin and Gene Expression Section, Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA.
2. Integrative Bioinformatics, Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA.
3. Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA.
4. Department of Pathology, Department of Computer Science, University of North Dakota, Grand Forks, ND, USA.
5. Clinical Research Unit, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA.
6. Division of Intramural Research, Office of the Scientific Director, National Institute on Minority Health and Health Disparities, Bethesda, MD, USA.
7. Division of Intramural Research, National Heart, Lung and Blood Institute, Bethesda, MD, USA.
8. Office of Scientific Computing, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA.
9. Department of Pathology and Cell Biology, Columbia University Medical Center, Columbia University, New York, NY, USA.