Affiliation: | 1. Department of Clinical and Toxicological Analyses, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil;2. Department of Biochemistry, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil;3. Department of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, USA;4. Department of Clinical and Toxicological Analyses, University of S?o Paulo, S?o Paulo, Brazil;5. Department of Pediatrics, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil |