[1] Univ Erlangen Nurnberg, Nikolaus Fiebiger Ctr, D-91054 Erlangen, Germany
[2] Univ Erlangen Nurnberg, Inst Clin & Mol Virol, D-91054 Erlangen, Germany
[3] Univ Erlangen Nurnberg, Dept Dermatol, D-91054 Erlangen, Germany
[4] Univ Marburg, Inst Virol, D-3550 Marburg, Germany
[5] Univ Penn, Dept Microbiol, Philadelphia, PA 19104 USA
[6] Ohio Univ, Coll Osteopath Med, Athens, OH 45701 USA
[7] Ohio Univ, Edison Biotechnol Inst, Athens, OH 45701 USA