1. Graduate Program in Health Sciences; Center for Health Sciences; Federal University of Rio Grande do Norte; Natal; Brazil
2. Department of Microbiology and Parasitology; Center for Biosciences; Federal University of Rio Grande do Norte; Natal; Brazil
3. Department of Clinical and Toxicological Analyses; Center for Health Sciences; Federal University of Rio Grande do Norte; Natal; Brazil
4. Department of Parasitology; Institute of Biological Sciences; Federal University of Minas Gerais; Belo Horizonte; Brazil