Sutthijumroon, S., S. Tungphaisal, and V. Chandeying. “Treatment of Mucopurulent Cervicitis with Doxycycline”. Thai Journal of Obstetrics and Gynaecology, vol. 1, no. 1, Jan. 1989, pp. 21-24, https://he02.tci-thaijo.org/index.php/tjog/article/view/257915.