Rajuddin, R., Rizia, F. and Nainggolan, S. I. . (2021) “Role of C-Reactive Protein, Erythrocyte Sedimentation Rate, Progesterone and Estradiol Hormone Levels in First Trimester Threatened Abortion: Peran C-Reactive Protein, Laju Endap Darah, Progesteron dan Estradiol pada Abortus Imminens Trimester Pertama ”, Indonesian Journal of Obstetrics and Gynecology, 9(1), pp. 42–48. doi: 10.32771/inajog.v9i1.1386.