1. Internal Diseases Department , Rīga Stradiņš University , 16 Dzirciema Str ., Rīga , , Latvia
2. Pauls Stradiņš Clinical University Hospital , 13 Pilsoņu Str ., Rīga , , Latvia
3. Rīga East University Hospital , 2 Hipokrāta Str ., Rīga , , Latvia
4. Biochemical Scientific Lab ., Rīga Stradiņš University , 5 Rātsupītes Str ., Rīga , , Latvia
5. “Medsport”, 19-2a Lielā Str ., Rīga , , Latvia