Increased headache prevalence in female adolescents and adult women with early menarche. The Head-HUNT Studies

Ægidius, K. L., Zwart, J. A., Hagen, K., Dyb, G., Holmen, T. L., & Stovner, L. J. (2011). Increased headache prevalence in female adolescents and adult women with early menarche. The Head-HUNT Studies. European Journal of Neurology, 18(2), 321-E25. doi:10.1111/j.1468-1331.2010.03143.x