Basta, D. J. A. A., Aboulghar, H. M., Ali, A. A., Akmal, D. M., & Baz, H. N. A. (2022). Randomized controlled trial comparing two doses of daily vitamin D supplementation in preterm neonates. International Journal of Health Sciences, 6(S1), 186–203. https://doi.org/10.53730/ijhs.v6nS1.4760