ASHRAF S, ELZER, and ELZAHAF RAGA A. “PREVALENCE OF RECURRENT HEADACHE AMONG UNDERGRADUATE’S STUDENTS OF A FACULTY OF MEDICAL TECHNOLOGY IN DERNA CITY: A PILOT STUDY”. International Journal of Clinical and Biomedical Research 1, no. 2 (April 15, 2015): 26–30. Accessed September 9, 2025. https://www.ijcbr.com/index.php/ijcbr/article/view/51.