IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-13-8-58142 Original Research Paper A Prospective Study On Pulmonary Arterial Hypertension In COPD Patients And Post-Covid/Covid-Like Syndrome Patients With COPD. Guna Sai Choudary Vejella Dr. August 2024 13 8 01 02