Simanjuntak, L., Simanjuntak, B. C. and Lumbanraja, S. N. (2022) “Comparison of Serum Vitamin D Level between Normal Pregnancy and Abortion in Outpatient Settings”, Open Access Macedonian Journal of Medical Sciences, 10(B), pp. 1538–1542. doi: 10.3889/oamjms.2022.9821.