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 (May 2022), 1538–1542. DOI:https://doi.org/10.3889/oamjms.2022.9821.