Barraviera, B. et al. 1987. Malaria in the Humaitá County, Amazonas State, XXI: Prevalence of glucose-6-phosphate dehydrogenase deficiency in a population sample and in malaria patients (Plasmodium falciparum) . Revista do Instituto de Medicina Tropical de São Paulo. 29, 6 (Dec. 1987), 374–380.