Kazmi, S Ali Danish, Ali Asghar Mustansir, Mareeha Sheikh, and Saad Ahmad Ali. 2020. “Vitamin D Deficiency in the Population of Karachi, Pakistan; A Cross-Sectional Study”. International Journal of Endorsing Health Science Research 8 (3):139-44. https://doi.org/10.29052/IJEHSR.v8.i3.2020.139-144.