[1] Univ Alabama Birmingham, Dept Med, Birmingham, AL 35223 USA
[2] Univ Alabama Birmingham, Dept Microbiol, Birmingham, AL 35223 USA
[3] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[4] Univ Massachusetts, Dept Math & Stat, Amherst, MA 01002 USA
[5] Duke Univ, Med Ctr, Dept Med, Durham, NC 27710 USA
[6] Duke Univ, Med Ctr, Dept Surg, Durham, NC 27710 USA
[7] Univ N Carolina, Dept Med, Chapel Hill, NC 27599 USA
[8] Univ N Carolina, Dept Biochem & Biophys, Chapel Hill, NC 27599 USA
[9] Univ Maryland, Dept Epidemiol, College Pk, MD 20742 USA
[10] Univ Calif San Francisco, Blood Syst Res Inst, San Francisco, CA 94118 USA
[11] Univ Calif San Francisco, Dept Lab Med, San Francisco, CA 94118 USA
[12] Univ Rochester, Dept Biostat & Computat Biol, Rochester, NY 14642 USA
[13] Univ Cape Town, Inst Infectious Dis & Mol Med, ZA-7701 Rondebosch, South Africa
[14] Santa Fe Inst, Santa Fe, NM 87501 USA