Table 1.

Baseline characteristics of enrolled patients.

Characteristics
Mean age	30 years (range 19–48 years)
International Index of Erectile Function – erectile function score	28 (range 26–30)
Nocturnal penile tumescence	4–6 episodes of nocturnal tumescence in all patients (lasting at least 10 min and with greater than 70% rigidity)
Meares–Stamey test	Negative
Digital rectal examination	No pathological findings
Baseline intravaginal ejaculatory latency time)	31.7 ± 14.8 s (range: 16.67–57.41 s)