Prasad S, Paliwal A, Razdan RG. A cross-sectional study of pain severity in patients suffering from different types of primary headache in the hospital setting. Int J Res Med Sci [Internet]. 2020 Apr. 27 [cited 2026 May 5];8(5):1740-4. Available from: https://www.msjonline.org/index.php/ijrms/article/view/7967