Affiliation: | Department of Biostatistics, Box 357232, University of Washington Seattle, Washington 98195, U.S.A. danyu{at}biostat.washington.edu Department of Biostatistics, University of Rochester Medical Center 610 Elmwood Avenue, Box 630, Rochester, New York 14642, U.S.A. oakes{at}metro.bst.rochester.edu Department of Statistics, Hill Center, Busch Campus, Rutgers University Piscataway, New Jersey 08855, U.S.A. zying{at}stat.rutgers.edu |