| Inclusion criteria | Exclusion criteria |
| Age > 18 years | DM |
| Clinically stable pathology for at least 12 months before the survey | Metabolic disorders |
| Presence or absence of concomitant ED | Smoke |
|
| Alcoholism |
|
| Penile fractures or traumas |
|
| Pelvic-retroperitoneal radiotherapy |
|
| Other medical or surgical treatments for PD |
|
| Pelvic-penile surgery |