Boonchuan, K., K. Wattananirun, and D. Boriboonhirunsarn. “Incidence of Intrapartum Abnormal Fetal Heart Rate Pattern in Siriraj Hospital”. Thai Journal of Obstetrics and Gynaecology, vol. 26, no. 1, Mar. 2018, pp. 18-26, doi:10.14456/tjog.2018.5.