Peña-Muñoz, Felipe, Ernesto Parras, Olga Compan, Nora Gutierrez, Celestino Martin, Jose Ramon Gonzalez-Porras, and Jose Maria Bastida. “Acquired Haemophilia A in Association With Influenza A and Urinary Tract Infection”. European Journal of Case Reports in Internal Medicine 7, no. 9 (June 4, 2020). Accessed November 3, 2026. https://ejcrim.com/index.php/ejcrim/article/view/1678.