Akhtar, Saeed, Tariq Ismail, Sara Zafar, Muqeet Wahid, and Syed Amir Gilani. “Vitamin D Status Among Female University Students in Pakistan: Vitamin D in Female University Students”. Progress in Nutrition 21, no. 2 (June 5, 2019): 327–332. Accessed July 18, 2024. https://mattioli1885journals.com/index.php/progressinnutrition/article/view/7605.