Zarcos Palma, Nuno, Mariana da Cruz, Gisela Evaristo Vasconcelos, Vitor Fagundes, Lindora Pires, and Mari Mesquita. “Acquired Von Willebrand Syndrome and Chronic Anaemia: A Different Diagnostic Approach”. European Journal of Case Reports in Internal Medicine 6, no. 6 (June 10, 2019). Accessed May 3, 2024. https://www.ejcrim.com/index.php/EJCRIM/article/view/1137.