Tueman, Kemmanut, and Tanyalak Wongleucha. “Lidocaine Gel Combined with Ibuprofen Versus Ibuprofen Alone for Pain Relief during an Endometrial Biopsy; A randomized controlled trial”. Thai Journal of Obstetrics and Gynaecology 34, no. 1 (January 26, 2026): 30–41. accessed September 24, 2026. https://he02.tci-thaijo.org/index.php/tjog/article/view/273465.