[1] Univ Amsterdam, Acad Med Ctr, Ctr Expt & Mol Med, NL-1105 AZ Amsterdam, Netherlands
[2] Vrije Univ Amsterdam, Med Ctr, Dept Mol Cell Biol & Immunol, Amsterdam, Netherlands
[3] Vrije Univ Amsterdam, Med Ctr, Dept Med Oncol, Amsterdam, Netherlands
[4] Univ Med Ctr, Erasmus MC, Dept Virol, Rotterdam, Netherlands
[5] Univ London Imperial Coll Sci Technol & Med, Dept Life Sci, Div Mol Biosci, London, England