Sunsaneevithayakul, P., Siwadune, T., Boriboonhirunsarn, D., Titapant, V., & Sutanthavibul, A. (2000). Reference Centile Charts for Fetal Umbilical Artery Doppler Velocimetry Waveform of Thai Fetuses. Thai Journal of Obstetrics and Gynaecology, 12(3), 201–211. retrieved from https://he02.tci-thaijo.org/index.php/tjog/article/view/256789