1. Department of Thoracic Surgery, Pauls Stradins Clinical University Hospital, Riga, Latvia;
2. Department of Pathology, University of Latvia, Riga, Latvia;
3. Department of Molecular Biology, Riga Stradins University, Riga, Latvia;
4. Department of Clinical Immunology, Pauls Stradins Clinical University Hospital, Riga, Latvia;
5. Department of Vascular Surgery, Pauls Stradins Clinical University Hospital, Riga, Latvia;
6. University of Latvia, Faculty of Medicine, Riga, Latvia