“Normal Chest X-Ray in Patients With Pulmonary Embolism May Involve Increased Risk of Massive Pulmonary Embolism”. European Journal of Medical and Health Sciences 4, no. 1 (January 4, 2022): 1–4. Accessed October 31, 2025. https://www.ej-med.org/index.php/ejmed/article/view/910.