“The Role of Cardiopulmonary Exercise Test in the Differential Diagnosis of Dyspnea in Patient With Primary Pulmonary Arterial Hypertension”. Research, Society and Development 12, no. 6 (June 7, 2023): e5812641833. Accessed June 28, 2025. https://ojs34.rsdjournal.org/index.php/rsd/article/view/41833.