Samar Fatima, Maeirah Shafique, Beenish Saleem, Nauroz Fatima, Bushra Akbar, Noureen Malik 2023. Prevalence of Vitamin D Insufficiency in Patients with Dry Eye Disease. Pakistan Journal of Medical & Health Sciences. 17, 12 (Dec. 2023), 659. DOI:https://doi.org/10.53350/pjmhs020231712659.