Halu, S. A. N., B. Murti, and D. Tamtomo. “Effect of Prematurity, Birthweight, Maternal Stress, Socio-Economic Status, and Mother-Child Intimacy on the Development of Preschool Children in Surakarta”. Journal of Maternal and Child Health, vol. 2, no. 3, July 2017, pp. 187-99, http://thejmch.com/index.php/thejmch/article/view/56.