A. P. Wibowo, S. Sulistyowati, and S. H. Respati, “Difference of Serum MMP9 and TNF ô€ƒ Level in Preterm and Term Premature Rupture of Membranes”, Indones J Obstet Gynecol, vol. 3, no. 1, pp. 15–18, Jan. 2015.