Simanjuntak, Leo, Benhard Christopher Simanjuntak, and Sarma Nursani Lumbanraja. “Comparison of Serum Vitamin D Level Between Normal Pregnancy and Abortion in Outpatient Settings”. Open Access Macedonian Journal of Medical Sciences 10, no. B (May 20, 2022): 1538–1542. Accessed May 2, 2024. https://oamjms.eu/index.php/mjms/article/view/9821.