Jamal, Abdul Basit, et al. “INTERTROCHANTERIC HIP FRACTURES AND VITAMIN D DEFICIENCY; A SIGNIFICANT ASSOCIATION”. Journal of Ayub Medical College Abbottabad, vol. 33, no. 2, Apr. 2021, pp. 257-61, https://demo.ayubmed.edu.pk/index.php/jamc/article/view/8272.