1. Jing Qin is Mathematical Statistician, Biostatistics Research Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892. Jun Shao is Professor, Department of Statistics, University of Wisconsin, Madison, WI 53706. Biao Zhang is Professor, Department of Mathematics, University of Toledo, Toledo, OH 43606. The research of Shao was supported in part by National Science Foundation (NSF) grants DMS0404535 and SES-0705033. The research of Zhang was...