Mujtaba, Syed Saleem, and Stephen Clark. “Carcinoid Heart Disease: Early Outcomes After Surgical Valve Replacement in Nine Patients”. The Heart Surgery Forum 21, no. 1 (February 16, 2018): E040-E043. Accessed September 21, 2024. https://journal.hsforum.com/index.php/HSF/article/view/1855.