Mahmood, Sana, Nasima Zafar, Nargis Anjum, Kauser Abbas Saldera, Ufaque Batool K. Samo, and Talha Shahid. 2023. “Relationship Between Vitamin D Insufficient, Vitamin D Deficient Pakistani Population and COVID-19”. International Journal of Health Sciences 7 (S1):284-95. https://doi.org/10.53730/ijhs.v7nS1.14191.