R. C., Bhuvana. “Prevalence of Psychiatric Co-Morbidity in Patients Presenting With Chronic Daily Headache: A Hospital Based Cross Sectional Study”. International Journal of Research in Medical Sciences 5, no. 1 (December 19, 2016): 321–325. Accessed January 17, 2026. https://www.msjonline.org/index.php/ijrms/article/view/404.