S. A. . Palpitany, K. H. . Alchawshili, . A. Z. . Hassan, and D. A. . Al-Banna, “Association between Vitamin D Deficiency and Bacterial Vaginosis among First Trimester Pregnant Women in Erbil Maternity Hospital”, djm, vol. 17, no. 1, pp. 51–59, Oct. 2019.