[1] NHGRI, Genet Dis Res Branch, NIH, Bethesda, MD 20892 USA
[2] NHGRI, NIH Intramural Sequencing Ctr, NIH, Bethesda, MD 20892 USA
[3] Duke Univ, Sch Med, Genome Anal Facil, Duke Ctr Human Genome Variat, Durham, NC 27710 USA
[4] NHGRI, Comparat Genom Unit, Genome Technol Branch, NIH, Bethesda, MD 20892 USA