Gonzales, G. F., V. Tapia, J. Cerna, A. Pajuelo, M. Lourdes Muñoz, C. E. Carrillo, and A. Peñaranda. “Characteristics of Pregnancy, Delivery and Newborn Children in the City of Huaraz, 2001-2005”. ACTA MEDICA PERUANA, Vol. 23, no. 3, May 2024, pp. 137 -43, https://amp.cmp.org.pe/index.php/AMP/article/view/1178.