Liu, Yang, Yanna Li, Jun Zhang, Jiachen Li, Yichen Zhao, Kemin Liu, Xiangming Fan, and Jiangang Wang. “Surgery Before Pregnancy in Women With Congenital Heart Disease: A Retrospective Study: CHD Surgery Before Pregnancy?”. The Heart Surgery Forum 26, no. 1 (January 30, 2023): E027-E037. Accessed September 18, 2024. https://journal.hsforum.com/index.php/HSF/article/view/4751.