1. Department of Internal Medicine Riga Stradins University Riga Latvia
2. Institute of Microbiology and Virology Riga Stradins University Riga Latvia
3. Department of Human Physiology and Biochemistry Riga Stradins University Riga Latvia
4. Laboratory of Biochemistry Riga Stradins University Riga Latvia
5. Institute of Anatomy and Anthropology Riga Stradins University Riga Latvia