Lopes Morgado, Francisco, Bárbara Saraiva, Celestina Blanco Torres, and João Correia. “Persistent Left Superior Vena Cava: A Finding After Central Venous Catheterization ”. European Journal of Case Reports in Internal Medicine 8, no. 1 (January 21, 2021). Accessed May 6, 2024. https://www.ejcrim.com/index.php/EJCRIM/article/view/2161.