1. Comparative Tropical Medicine and Parasitology; Ludwig-Maximilians-Universität München; Munich Germany
2. Faculty of Science and Biology Centre of the ASCR; Institute of Parasitology; University of South Bohemia; České Budějovice Czech Republic
3. Departamento de Parasitologia; ICB-UFMG; Belo Horizonte Brazil
4. Departamento de Medicina Veterinária Preventiva; INCT-Pecuária; Escola de Veterinária- UFMG; Belo Horizonte Brazil