[1] St Georges Univ London, Ctr Infect, Div Cellular & Mol Med, London, England
[2] Polymun Sci Immunbiol Forsch GmbH, Vienna, Austria
[3] Univ London Imperial Coll Sci Technol & Med, Jefferiss Res Trust Labs, Wright Fleming Inst, Div Med, London, England
[4] Harvard Univ, Beth Israel Deaconess Med Ctr, Sch Med, CAVD Neutralizing Antibody Lab, Boston, MA 02215 USA