Torloni, M. R., N. Sass, J. L. Sato, A. C. P. Renzi, M. Fukuyama, and P. R. de Lucca. “Clinical Formulas, mother’s Opinion and Ultrasound in Predicting Birth Weight”. São Paulo Medical Journal, vol. 126, no. 3, May 2008, pp. 145-9, https://periodicosapm.emnuvens.com.br/spmj/article/view/1963.