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Carbolines
Phosphodiesterase Inhibitors
Sulfones
Purines
Piperazines
Vasodilator Agents
Phosphodiesterase 5 Inhibitors
Erectile Dysfunction
Treatment Outcome
Patient Satisfaction
Drug Administration Schedule
Randomized Controlled Trials
Double-Blind Method
Cross-Over Studies
Penile Erection
Coitus
Sexuality
United Arab Emirates
Kuwait
Asia, Southeastern
Co-Publications
3
2
1
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