Gezmen Karadağ, Makbule, Hilal Yıldıran, Feride Ayyıldız, Yasemin Ertaş Öztürk, Özgül Bike Yücalan Girgin, and Onur Toka. “Is Low Serum 25-Hydroxyvitamin D Associated With Attack Frequency and Duration in Migraine and Tension-Type Headache?”. Progress in Nutrition 21, no. 3 (September 18, 2019): 702–708. Accessed July 18, 2024. https://mattioli1885journals.com/index.php/progressinnutrition/article/view/7964.