[1] Med Univ S Carolina, Dept Biochem & Mol Biol, Charleston, SC 29425 USA
[2] Med Univ S Carolina, Dept Microbiol & Immunol, Charleston, SC 29425 USA
[3] Med Univ S Carolina, Div Infect Dis, Charleston, SC 29425 USA
[4] Yeshiva Univ, Dept Microbiol & Immunol, Albert Einstein Coll Med, Bronx, NY 10461 USA
[5] Yeshiva Univ, Dept Med, Albert Einstein Coll Med, Bronx, NY 10461 USA