1. Curriculum in Genetics and Molecular Biology, University of North Carolina, Chapel Hill, North Carolina 27599
2. Department of Biological Sciences, Vanderbilt University, Nashville, Tennessee 37232
3. Integrative Program for Biological and Genome Sciences, University of North Carolina, Chapel Hill, North Carolina 27599
4. Department of Genetics, University of North Carolina, Chapel Hill, North Carolina 27599
5. Department of Biology, University of North Carolina, Chapel Hill, North Carolina 27599
6. Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina 27599