Sharma, I. .; Kaundal, P. K. .; Sarkar, M.; Jha, T.; Negi, P. C. EFFECTS OF TADALAFIL ON CARDIOPULMONARY HAEMODYNAMICS IN PATIENTS OF CHRONIC PULMONARY DISEASES WITH PULMONARY HYPERTENSION: A PILOT STUDY. Natl J Med Res 2016, 6, 28-34.