Clinical Features and Treatment Outcomes of Medication Overuse Headache in Older Patients: Insights from a Nationwide Prospective Registry. - Hong, Yooha; Kang, Mi-Kyoung; Park, Hong-Kyun; Chu, Min Kyung; Oh, Sun-Young; Kang, Jin-Ju; Moon, Heui-Soo; Lee, Mi Ji; Song, Tae-Jin (Journal of Clinical Medicine, 2025)