[1] NCI, Metab Branch, Div Clin Sci, NIH, Bethesda, MD 20892 USA
[2] Stanford Univ, Sch Med, Dept Biochem, Stanford, CA 94035 USA
[3] Stanford Univ, Sch Med, Dept Genet, Stanford, CA 94035 USA
[4] Stanford Univ, Sch Med, Dept Med, Stanford, CA 94035 USA
[5] Stanford Univ, Sch Med, Howard Hughes Med Inst, Stanford, CA 94035 USA
[6] NIH, Bioinformat & Mol Anal Sect, CBEL, CTT, Bethesda, MD 20892 USA
[7] US FDA, Ctr Biol Evaluat & Res, Bethesda, MD 20892 USA
[8] Res Genet Inc, Huntsville, AL 35801 USA
[9] Univ Nebraska, Med Ctr, Dept Pathol & Microbiol, Omaha, NE 68198 USA
[10] Univ Nebraska, Med Ctr, Dept Med, Omaha, NE 68198 USA