1. Swedish Institute for Infectious Disease Control, Solna, Sweden
2. Karolinska Institute, Department of Microbiology, Tumor and Cell Biology, Stockholm, Sweden
3. Johnson & Johnson Pharmaceutical Research & Development, a Division of Janssen Pharmaceutica NV, Beerse, Belgium
4. Tibotec NV, Johnson & Johnson, Beerse, Belgium
5. Uppsala University, Department of Medical Biochemistry and Microbiology, Uppsala, Sweden