Umbreen Aslam, Muhammad Kashif Bashir, Nosheen Zafar, Niamat Ali, Salman Javed, Najam-us-Sehar Saeed. “Effects of COVID-19 Severity on Serum Calcium Levels”. Pakistan Journal of Medical & Health Sciences 16, no. 08 (September 17, 2022): 258. Accessed December 22, 2024. https://mail.pjmhsonline.com/index.php/pjmhs/article/view/2349.