Poggiali, Erika, Pau Mateo Ramos, Davide Bastoni, Andrea Vercelli, and Andrea Magnacavallo. “Abdominal Pain: A Real Challenge in Novel COVID-19 Infection”. European Journal of Case Reports in Internal Medicine 7, no. 4 (March 26, 2020). Accessed November 3, 2026. https://ejcrim.com/index.php/ejcrim/article/view/1632.