Lin, Guangqian, Yueqiu Su, and Yong jun Qian. “Safe Surgical Retrieval of Endothelialized Ventricular Septal Defect Closure Device”. The Heart Surgery Forum 23, no. 3 (May 6, 2020): E285-E286. Accessed April 19, 2024. https://journal.hsforum.com/index.php/HSF/article/view/2851.