The Study of Serum Vitamin D Level In Patient With Pulmonary Hypertension And Right Ventricular Systolic Dysfunction Detected by Transthoracic Echocardiography. JOURNAL OF UNIVERSITY OF BABYLON for Pure and Applied Sciences, [S. l.], v. 26, n. 5, p. 86–94, 2018. Disponível em: https://journalofbabylon.com/index.php/JUBPAS/article/view/863. Acesso em: 19 apr. 2025.