Prastiwi, O. O. and Utama, B. I. (2023) “Pengaruh Kadar Vitamin D dan Tumor Necrosis Factor Alpha terhadap Kehamilan Normal Trimester 1 dan Abortus Spontan”, Andalas Obstetrics And Gynecology Journal, 7(2), pp. 391–404. doi: 10.25077/aoj.7.2.391-404.2023.