Wilbring, Manuel, Utz Kappert, Dirk Daubner, Klaus Matschke, and Sems Malte Tugtekin. “Metastasizing Primary Atrial Leiomyosarcoma Causing a Functional High-Grade Mitral Stenosis”. The Heart Surgery Forum 15, no. 2 (April 26, 2012): E108-E110. Accessed November 26, 2024. https://journal.hsforum.com/index.php/HSF/article/view/456.