1. Department of Laboratory Medicine Lund, Lund University, Lund, Sweden.
2. Department of Clinical Sciences, Malmö, Infectious Diseases Research Unit, Lund University, Malmö, Sweden.
3. Department of Experimental Medical Science, Division of Molecular Virology, Lund University, Lund, Sweden.
4. Bandim Health Project, INDEPTH Network, Bissau, Guinea-Bissau, West Africa.
5. Department of Laboratory Medicine, Malmö, Lund University, Malmö, Sweden.
6. Department of Clinical Sciences, Division of Infection Medicine, Lund University, Lund, Sweden.
7. Department of Microbiology, Tumor and Cell Biology, Karolinska Institute, Stockholm, Sweden.