Wisetwoharn, Panupan, and Oraphan Aswakul. 2019. “Respiratory Distress in Early Premature Newborns with Suboptimal Antenatal Steroid”. Thai Journal of Obstetrics and Gynaecology 27 (4). Bangkok, Thailand:195-202. https://doi.org/10.14456/tjog.2019.25.