1 Unit of Infectious Diseases, Department of Medicine Solna, Karolinska Institutet, Stockholm.
2 Department of Infectious Diseases, Karolinska University Hospital, Stockholm.
3 Public Health Agency of Sweden, Solna, Singapore, Singapore.
4 Department of Communicable Disease Control and Prevention, Stockholm County Council, Singapore, Singapore.
5 Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Singapore, Singapore.
6 Department of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden, Singapore, Singapore.
7 Singapore Centre on Environmental Life Sciences Engineering (SCELSE) and Lee Kong Chian School of Medicine (LKC), Nanyang Technological University (NTU), Singapore, Singapore.