@article{art770,
  title = {To Study the Role of Bosentan in Patients with Irreversible Obstructive Pulmonary Disease Having Mild to Moderate Pulmonary Arterial Hypertension},
  doi = {10.18535/ijmsci/v4i5.03},
  url = {https://articlecta.com/index.php/ijecs/article/view/770}
}