Demographic data and headache diagnoses of the participants
A total of 3682 employees of the Ichikawa City Office were invited to participate in this survey. Among them, 1926 (52.3%) provided informed consent and completed the questionnaire, with…

A total of 3682 employees of the Ichikawa City Office were invited to participate in this survey. Among them, 1926 (52.3%) provided informed consent and completed the questionnaire, with…