[1] Beth Israel Deaconess Med Ctr, Ctr Virol & Vaccine Res, Boston, MA 02215 USA
[2] Case Western Reserve Univ, Cleveland, OH 44106 USA
[3] Scripps Res Inst, La Jolla, CA 92037 USA
[4] Frederick Natl Lab, AIDS & Canc Virus Program, Leidos Biomed Res, Frederick, MD 21702 USA
[5] Harvard Med Sch, Boston, MA 02115 USA
[6] Bioqual, Rockville, MD 20852 USA
[7] Univ Massachusetts, Sch Med, Worcester, MA 01655 USA
[8] Ragon Inst Massachusetts Gen Hosp Massachusetts I, Cambridge, MA 02139 USA