Kalvakuri, Nageswara Rao, and Sushma Nalisetty. 2017. “Serum Zinc Levels and Effect of Zinc and Vitamin A Supplementation in Children With Diarrhea: A Randomized Control Study”. International Journal of Contemporary Pediatrics 4 (4):1501-5. https://doi.org/10.18203/2349-3291.ijcp20172694.