Oliveira, A. C. de, A. M. N. dos Santos, A. M. Martins, and V. D’Almeida. “Screening for Inborn Errors of Metabolism Among Newborns With Metabolic Disturbance and/Or Neurological Manifestations Without Determined Cause”. São Paulo Medical Journal, vol. 119, no. 5, Sept. 2001, pp. 160-4, https://periodicosapm.emnuvens.com.br/spmj/article/view/2779.