1. Division of Statistics, Department of Mathematical Sciences Northern Illinois University DeKalb IL 60115 USA
2. Center for Molecular Medicine and Genetics, School of Medicine Wayne State University Detroit MI 48202 USA
3. Department of Biostatistics Harvard T.H. Chan School of Public Health Boston MA 02115 USA
4. Program in Medical and Population Genetics Broad Institute of MIT and Harvard Cambridge MA 02142 USA
5. JP Morgan Chase & Co New York NY 10004 USA
6. Monsanto Company Chesterfield MO 63017 USA