Fan, He, Qian Xi Ming, Zhang Wei Min, and Chen Huai Dong. “Comparison of Totally Thoracoscopic and Traditional Sternotomy Approaches for Mitral Valve Replacement”. The Heart Surgery Forum 22, no. 4 (July 26, 2019): E310-E314. Accessed December 12, 2019. https://journal.hsforum.com/index.php/HSF/article/view/2453.