1. Ming Yuan is Assistant Professor, School of Industrial and Systems Engineering, Georgia Institute of Technology, Atlanta, GA 30332 . Christina Kendziorski is Assistant Professor, Department of Biostatistics and Medical Informatics, University of Wisconsin, Madison, WI 53706 . Yuan was supported in part by National Science Foundation (NSF) grant DMS-00-72292. Kendziorski was supported in part by NSF grants R01-ES12752 and P30-CA14520. The authors thank Keith Baggerly, Hongzhe Li, Michael Newton, and...