Suntharasaj, Thitima, Ounjai Kor-anantakul, and Rawiwan Rattanaprueksachart. “Fetal Heart Rate Accelerations at Gestational Age 28-41 Weeks”. Thai Journal of Obstetrics and Gynaecology 9, no. 1 (March 1, 1997): 13–18. accessed September 29, 2026. https://he02.tci-thaijo.org/index.php/tjog/article/view/257303.