Rhinza Seputra Simanjuntak, Miftah Pramudyo, Frisky Ronald Tua Marbun, Rheza Felari Simanjuntak, and Tatyana Sianipar, “The Efficacy of Phosphodiesterase-5 Inhibitors on Pulmonary Vascular Resistance in Patients with Single Ventricle Physiology”, the int. j. of med. science and health, vol. 16, no. 1, pp. 69–115, Sep. 2025, doi: 10.70070/vph0ng76.