[1] Univ Illinois, Dept Stat, Champaign, IL 61820 USA
[2] Stanford Univ, Sch Med, Dept Med, Stanford, CA 94305 USA
[3] US FDA, Natl Ctr Toxicol Res, Jefferson, AR 72079 USA
[4] Stanford Univ, Dept Biochem, Sch Med, Stanford, CA 94305 USA
[5] Stanford Univ, Dept Genet, Sch Med, Stanford, CA 94305 USA
[6] Univ Illinois, Dept Bioengn, Urbana, IL 61801 USA
[7] Univ Illinois, Dept Stat & Comp Sci, Urbana, IL 61801 USA
[8] Univ Illinois, Inst Genom Biol, Urbana, IL 61801 USA