1. Department of Internal Medicine Faculty of Health Sciences University of the Witwatersrand Johannesburg South Africa
2. Department of Microbiology, Tumor and Cell biology Karolinska Institutet Stockholm Sweden
3. Clinical Microbiology Karolinska University Hospital Stockholm Sweden
4. Lee Kong Chian School of Medicine (LKC) Singapore Centre on Environmental Life Sciences Engineering (SCELCE) Nanyang Technical University Singapore Singapore
5. Department of Immunology and Institute of Cellular and Molecular Medicine Faculty of Health Sciences University of Pretoria Pretoria South Africa