[1] Stanford Univ, Dept Genet, Ctr Clin Sci Res, Stanford, CA 94305 USA
[2] Stanford Univ, Sch Med, Dept Genet, Stanford, CA 94305 USA
[3] Affymetrix Inc, Emeryville, CA 94608 USA
[4] Stanford Univ, Ctr Clin Sci Res, Stanford Funct Genom Facil, Stanford, CA 94305 USA
[5] Stanford Univ, Sch Med, Dept Biochem, Howard Hughes Med Inst, Stanford, CA 94305 USA