Wibowo, Aji P, et al. “Difference of Serum MMP9 and TNF ô€ƒ Level in Preterm and Term Premature Rupture of Membranes”. Indonesian Journal of Obstetrics and Gynecology, vol. 3, no. 1, Jan. 2015, pp. 15-18, doi:10.32771/inajog.v3i1.20.