1. Post‐Graduate Programme in Pathology School of Medicine Federal University of Ceará Fortaleza Ceará Brazil
2. Department of Clinical and Toxicological Analysis Laboratory of Research in Molluscan Parasitology and Biology Federal University of Ceará Fortaleza Ceará Brazil
3. Post‐Graduate Programme in Public Health School of Medicine Federal University of Ceará Fortaleza Ceará Brazil
4. Federal Institute of Education Science and Technology of Ceará Caucaia Ceará Brazil
5. Post‐Graduate Programme in Medical Sciences School of Medicine Federal University of Ceará Fortaleza Ceará Brazil
6. Department of Community Health School of Medicine Federal University of Ceará Fortaleza Ceará Brazil