Abobaker Alhassi , Anis, et al. “Impact of Low-Dose Oral Sildenafil on Erectile Function As Penile Rehabilitation Protocol After Nerve Sparing Radical Cystectomy in Zagazig University Hospitals”. Tobruk University Journal of Medical Sciences, vol. 6, no. 1, June 2023, pp. 27-31, https://doi.org/10.64516/ryh30x47.