Chera-aree, Pattraporn, Chenchit Chayachinda, Suvimol Niyomnaitham, and Witchuda Kamolvit. 2018. “Cefoxitin Plus Doxycycline Versus Clindamycin Plus Gentamicin in Hospitalized Pelvic Inflammatory Disease Patients: An Experience from A Tertiary Hospital”. Siriraj Medical Journal 70 (6):479-83. https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/163137.