1. Department of Biology and Microbiology, Riga Stradins University, LV-1007 Riga, Latvia
2. Department of Public Health and Epidemiology, Riga Stradiņš University, LV-1007 Riga, Latvia
3. Department of Internal Diseases, Riga Stradins University, LV-1007 Riga, Latvia
4. Scientific Laboratory of Molecular Genetics, Riga Stradins University, LV-1007 Riga, Latvia
5. Outpatient Clinic, Pauls Stradins Clinical University Hospital, LV-1002 Riga, Latvia
6. Outpatient Clinic, Children’s Clinical University Hospital, LV-1004 Riga, Latvia