Saqib, S., S. . Umer, N. . Bano, Z. . Anwar, J. . Liaqat, and S. . Khanam. “Prevalence of Vitamin D Deficiency in Pregnant Ladies”. Pakistan Journal of Medical & Health Sciences, vol. 16, no. 02, Mar. 2022, p. 311, doi:10.53350/pjmhs22162311.