Barraviera, Benedito, Paulo Eduardo de Abreu Machado, Domingos Alves Meira, Paulo Roberto Curi, Jair Natal Pires Martins, and Maria Júlia de Souza. 1988. “ Glucose-6-Phosphate Dehydrogenase and Glutathione Reductase Activity in Methemoglobin Reduction by Methylene Blue and Cyst Amine: Study on Glucose-6-Phosphate Dehydrogenase-Deficient Individuals, on Normal Subjects and on Riboflavin-Treated Subjects ”. Revista Do Instituto De Medicina Tropical De São Paulo 30 (5): 370-78. https://www.revistas.usp.br/rimtsp/article/view/28611.