Chalopagorn, P. and Manotaya, S. 2019. Knowledge and Attitude of Pregnant Women Undergoing Cell-free DNA Screening at the King Chulalongkorn Memorial Hospital. Thai Journal of Obstetrics and Gynaecology. 27, 3 (Jul. 2019), 156–164. DOI:https://doi.org/10.14456/tjog.2019.20.