KC, S. R.; Timilsina, B. R.; Upadhyay, H. P.; Devkota, G.; Shah, R.; Lamichanne, N. Sildenafil Is Safe and Effective for the Treatment of Lower Ureteric Stone With No Major Side Effect. Birat J. Health Sci. 2019, 3 (3), 560-564. https://doi.org/10.3126/bjhs.v3i3.22190.