Thangwijitra, Surangtip, Chamnan Sripramodya, and Sukawadee Kanchanawat. “Risk Factors of Birth Asphyxia in Pregnancy 37 Complete Weeks and Over by Apgar Score Less Than 7 at 5 Minutes”. Thai Journal of Obstetrics and Gynaecology 18, no. 2 (May 10, 2012): 54–62. accessed September 28, 2026. https://he02.tci-thaijo.org/index.php/tjog/article/view/1410.