Attawattanakul, N., and P. Tansupswatdikul. “Effects of Antenatal Dexamethasone on Respiratory Distress in Late Preterm Infant: A randomized controlled trial”. Thai Journal of Obstetrics and Gynaecology, vol. 23, no. 1, Mar. 2015, pp. 25-33, doi:10.14456/tjog.2015.4.