1. Department of Postgraduate Program in Pediatrics Federal University of Health Sciences of Porto Alegre Porto Alegre Rio Grande do Sul Brazil
2. Department of Pediatric Emergency Santo Antônio Children's Hospital Porto Alegre Rio Grande do Sul Brazil
3. Department of Medicine Pontifical Catholic University of Rio Grande do Sul Porto Alegre Rio Grande do Sul Brazil
4. Department of Pollution and Oxidative Stress Laboratory Federal University of Health Sciences of Porto Alegre Porto Alegre Rio Grande do Sul Brazil
5. Department of Postgraduate Federal University of Health Sciences of Porto Alegre Porto Alegre Rio Grande do Sul Brazil