1. Department of Applied Pharmacy, Riga Stradins University, 16 Dzirciema Street, LV-1007 Riga, Latvia
2. Latvian Institute of Organic Synthesis, 21 Aizkraukles Street, LV-1006 Riga, Latvia
3. Department of Pharmaceutical Chemistry, Riga Stradins University, 16 Dzirciema Street, LV-1007 Riga, Latvia
4. Department of Pharmacy, Riga Stradins University Red Cross Medical College, 5 J. Asara Street, LV-1009 Riga, Latvia
5. Department of Commerce, Turība University, 68 Graudu Street, LV-1058 Riga, Latvia