[1] Katholieke Univ Leuven, Labs Clin & Epidemiol Virol, Louvain, Belgium
[2] Katholieke Univ Leuven, Lab Virol & Chemotherapy, Louvain, Belgium
[3] Katholieke Univ Leuven, Rega Inst Med Res, Louvain, Belgium
[4] Hop Univ Enfants Reine Fabiola, Dept Oncol, Brussels, Belgium
[5] Free Univ Brussels, Virol Lab, Brussels, Belgium
[6] Hop St Pierre & Erasme, Virol Lab, Brussels, Belgium