Khan, Sara Jamil, Saif Ur Rehman, Farzana Rahim Memon, Raima Kalhoro, Aamir Usman Memon, and Saadia Zainab. “Effectiveness of Calcium and Vitamin D, With and Without Collagen Peptide, in Enhancing Bone Mineral Density on Postmenopausal Women With Osteopenia: A Randomized Controlled Trial: Role of Calcium and Vitamin D in Bone Mineral Density on Postmenopausal Women With Osteopenia”. Annals of Punjab Medical College 19, no. 1 (March 31, 2025): 62-66. Accessed June 24, 2025. https://www.apmcfmu.com/index.php/apmc/article/view/1732.