1. Institute of Pharmacology and Toxicology, Department of Biomedical Sciences; University of Veterinary Medicine Vienna; Vienna Austria
2. Department of Parasitology; Institute of Tropical Medicine “Pedro Kourí”; Havana Cuba
3. Department of Chemistry, Institute of Pharmacy and Food; Havana University; Havana Cuba
4. Department of Pharmacology; Institute of Postgraduate Medical Education & Research; Kolkata India
5. Department of Chemistry, Division of Chemistry of Renewables; University of Natural Resources and Life Sciences; Tulln Austria