Kaewphai, S., N. Ponsane, and A. Karnsupakul. “Development of System of Care for Ectopic Pregnancies, Buriram Hospital, Buriram Province”. Journal of Health Science of Thailand, vol. 23, no. 6, Nov. 2017, pp. 1067-76, https://thaidj.org/index.php/JHS/article/view/796.