Oliveira, G. H. de, C. de M. Dias, D. C. M. Vaz-Oliani, and A. H. Oliani. “Intrauterine Thrombosis of Umbilical Artery – Case Report”. São Paulo Medical Journal, vol. 134, no. 4, Aug. 2016, pp. 355-8, https://periodicosapm.emnuvens.com.br/spmj/article/view/1106.