Tanslaruk, U., R. Aeng, and P. Wongprachoom. “Single-Dose Systemic Methotrexate Therapy in Patients with Suspected Ectopic Pregnancy: Two year experience”. Thai Journal of Obstetrics and Gynaecology, vol. 13, no. 3, Apr. 2001, pp. 85-90, https://he02.tci-thaijo.org/index.php/tjog/article/view/256562.