1. DR.RENGARAJ RENGARAJ. TITLE: STUDY OF CLINICAL PROFILE OF PATIENTS WITH CHRONIC HEADACHE IN A TERTIARY CARE HOSPITAL. International Journal of Medical Science And Diagnosis Research, [S. l.], v. 4, n. 3, 2020. Disponível em: https://ojs.ijdcs.com/index.php/ijmsdr/article/view/541. Acesso em: 8 aug. 2026.