1. Faculty of Medicine, Riga Stradinš University, Riga, Latvia
2. Joint Microbiology Laboratory, Pauls Stradinš Clinical University Hospital, Riga, Latvia
3. Faculty of Medicine, Sriwijaya University, Palembang, Indonesia
4. Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, MA, USA
5. Faculty of Biomedical Sciences, Vrije Universiteit, Amsterdam, Netherlands
6. Department of Internal Diseases, Riga Stradinš University, Riga, Latvia