Karatay, Saliha, Kadir Yildirim, Ali Karakuzu, Ahmet Kiziltunc, Ragip Ismail Engin, Yonca Bavli Eren, and Akin Aktas. 2011. “ Vitamin D Status in Patients With Behcet’s Disease ”. Clinics 66 (5): 721-23. https://doi.org/10.1590/S1807-59322011000500002.