Ikeda, Y., Egawa, M., Ohsuga, T., Mandai, M., Takahashi, Y. Nakayama, T. 2023. Relationship of ethinylestradiol/drospirenone prescription on work productivity and activity impairment among women with menstruation-related symptoms: A multicenter prospective observational study. Journal of Occupational and Environmental Medicine 65(7): e491-e495.