1. Department of Health Behavior; Gillings School of Global Public Health; The University of North Carolina; Chapel Hill North Carolina
2. Carolina Mammography Registry; Department of Radiology; The University of North Carolina; Chapel Hill North Carolina
3. Department of Epidemiology; Gillings School of Global Public Health; The University of North Carolina; Chapel Hill North Carolina
4. Institute for Behavioral Genetics; University of Colorado Boulder; Boulder Colorado
5. Department of Biostatistics; Gillings School of Global Public Health; The University of North Carolina; Chapel Hill North Carolina