Sofia, Sefri N., Udin Bahrudin, Ilham Uddin, Muhammad A. Sobirin, Erna Setiawati, Galuh Hardiningsih, Kevin C. Tjandra, and Edward KS. Limijadi. 2025. “Role of Phosphodiesterase-3 Inhibitor in Cardiorespiratory Fitness and Functional Class of Patients With Pulmonary Hypertension: A Randomized, Double-Blind, Placebo-Controlled Trial”. Narra J 5 (1):e1301. https://doi.org/10.52225/narra.v5i1.1301.