1. Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut.
2. Department of Pathology, Yale School of Medicine, New Haven, Connecticut.
3. Baylor College of Medicine, Houston, Texas.
4. Wadsworth Center, New York State Department of Health, Albany, New York.
5. The Howard Hughes Medical Institute, Chevy Chase, Maryland.
6. Program in Computational Biology and Bioinformatics, Yale University, New Haven, Connecticut.