1. Health Sciences Post-Graduation Program, Health Sciences Centre, State University of Londrina, Londrina, Parana, Brazil
2. Department of Pediatrics and Pediatric Surgery, Health Sciences Centre, State University of Londrina, Londrina, Parana, Brazil
3. Department of Nursery, Health Sciences Centre, State University of Londrina, Londrina, Parana, Brazil
4. Department of Statistics, State University of Londrina, Londrina, Parana, Brazil
5. Medical Residency Students in Pediatrics, Londrina, Parana, Brazil
6. Department of Clinical Medicine, Psychiatry Unit, Health Sciences Centre, State University of Londrina, Londrina, Parana, Brazil