Tursinawati, Yanuarita, Serene Thain, Christina Choi, and George Heong Yeo Seow. “Amniocentesis Increases Level of Anxiety in Women With Invasive Prenatal Diagnosis of Down Syndrome”. Universa Medicina 34, no. 2 (August 15, 2015): 112–120. Accessed June 22, 2021. https://univmed.org/ejurnal/index.php/medicina/article/view/26.