Praditsathawong , Supannee, and Sugunlaya Nimitsurachat. 2000. “Risk Factors Associated with Low Apgar Score of Newborn at One Minute”. Thai Journal of Obstetrics and Gynaecology 12 (4). Bangkok, Thailand:277-82. https://he02.tci-thaijo.org/index.php/tjog/article/view/256945.