Affiliation: | 1Genomics and Computational Biology Program, 700 Clinical Research Building, 415 Curie Boulevard, Philadelphia, PA 19104, 2Penn Center for Bioinformatics, 3104G Biomolecular Sciences Building (#296), College park, MD 20742 and 3Department of Statistics, The Wharton School, University of Pennsylvania, Philadelphia, 463 Huntsman Hall, 3730 Walnut Street, Philadelphia, PA 19104, USA |