Affiliation: | A Public Health Sciences Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave. N., MW-805, Seattle, WA 98109, USA A2 E-mail: lih@fhcrc.org A3 E-mail: rprentic@fhcrc.org A4 E-mail: lzhao@fhcrc.org A5 Division of Statistics, University of California, Davis, CA 95616, USA E-mail: jjfan@wald.ucdavis.edu |