PDE-5i Management of Erectile Dysfunction After Rectal Surgery: A Systematic Review Focusing on Treatment Efficacy oleh Margherita Notarnicola MD, Valerio Celentano MD, PhD, Paschalis Gavriilidis MD, PhD, Bilal Abdi MD, Nassiba Beghdadi MD, Daniele Sommacale MD, PhD, Francesco Brunetti MD, Federico Coccolini MD, PhD, Nicola de’Angelis MD, PhD