Aryati, Aryati, et al. “Diagnostic Value of IGFBP-1 Rapid Test and Combined IGFBP-1-AFP in Vaginal Fluid from Premature Rupture of Amniotic Membranes”. Indonesian Journal of Obstetrics and Gynecology, vol. 3, no. 3, July 2015, pp. 133-9, doi:10.32771/inajog.v3i3.42.