[1] Univ Colorado, Hlth Sci Ctr, Dept Neurol, Denver, CO 80262 USA
[2] Univ Colorado, Hlth Sci Ctr, Dept Pediat Infect Dis, Denver, CO 80262 USA
[3] Univ Colorado, Hlth Sci Ctr, Dept Med, Denver, CO 80262 USA
[4] Univ Colorado, Hlth Sci Ctr, Dept Microbiol, Denver, CO 80262 USA
[5] Univ Colorado, Hlth Sci Ctr, Dept Immunol, Denver, CO 80262 USA
[6] Denver Vet Affairs Med Ctr, Denver, CO 80262 USA
[7] Vanderbilt Univ, Sch Med, Dept Pediat, Nashville, TN 37232 USA
[8] Vanderbilt Univ, Sch Med, Dept Microbiol & Immunol, Nashville, TN 37232 USA
[9] Vanderbilt Univ, Sch Med, Elizabeth B Lamb Ctr Pediat Res, Nashville, TN 37232 USA