Questionnaire-Based Survey during COVID-19 Vaccination on the Prevalence of Elderly's Migraine, Chronic Daily Headache, and Medication-Overuse Headache in One Japanese City-Itoigawa Hisui Study

Katsuki M, Kawahara J, Matsumori Y, Yamagishi C, Koh A, Kawamura S, Kashiwagi K, Kito T, Entani A, Yamamoto T, Otake M, Ikeda T, Yamagishi F. Questionnaire-Based Survey during COVID-19 Vaccination on the Prevalence of Elderly's Migraine, Chronic Daily Headache, and Medication-Overuse Headache in One Japanese City-Itoigawa Hisui Study. J Clin Med. 2022; 11(16): 1-19.