Hadianfard M, Rahimi-Jaberi A, Kazemilar S. The Effect of Methylprednisolone Acetate Injection at Cervical Trigger Points in Chronic as well as Drug Resistant Headache. JPMRE [Internet]. 2019 Jun. 5 [cited 2024 Dec. 22];1(2):69-74. Available from: https://jpmre.org/index.php/jpmre/article/view/23