Tsenddorj, Byambasuren, Dorjkhand Baldorj, Delgermaa Purev, Selenge Enkhtuya, Undram Lkhagvaa, Burmaajav Badrakh, and Otgonbayar Luvsannorov. “Some Associations of Primary Headache Disorders in Mongolia: A Nationwide Population-Based Study”. Central Asian Journal of Medical Sciences 5, no. 4 (December 29, 2019): 308–316. Accessed July 6, 2024. https://mongoliajol.info/index.php/CAJMS/article/view/2854.