Fatema, Nurun Nahar, and Ashfaque Ahammed Khan. “Patent Foramen Ovale and Cryptogenic Stroke : A Case Report”. Cardiovascular Journal 14, no. 2 (April 6, 2022): 180–184. Accessed February 5, 2023. https://www.banglajol.info/index.php/CARDIO/article/view/58784.