Villamonte, W., M. Jerí, and C. de la Torre. “Fetal Biometry and Amniotic Fluid Index from the 14th to the 41st Week at 3400 Meters Altitude and Comparing These Parameters With Those Obtained at Other Altitude Levels”. ACTA MEDICA PERUANA, Vol. 30, no. 1, Mar. 2013, pp. 14-25, https://amp.cmp.org.pe/index.php/AMP/article/view/1232.