1. Departamento de Parasitología, Instituto de Medicina Tropical “Pedro Kourí”, Apartado Postal No. 601, Marianao 13, Ciudad Habana, Cuba
2. Institute of Pharmacology and Toxicology, Department of Biomedical Sciences, University of Veterinary Medicine, Veterinärplatz 1, A-1210 Vienna, Austria
3. Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
4. Laboratory of Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium