Anusasananant, Kamolchanok, Sornpin Armarttasn, and Budsaba Wiriyasirivaj. “The Association between Antenatal Umbilical Cord Coiling Index Pattern and Meconium-stained Amniotic Fluid in Gestational Diabetic Mellitus”. Thai Journal of Obstetrics and Gynaecology 22, no. 2 (April 4, 2014): 67–73. accessed April 6, 2025. https://he02.tci-thaijo.org/index.php/tjog/article/view/12496.