Clinical Trial Designs for Premature Ejaculation: Observational, Intervention and Intervention Preference Studies
5. Mulhall JP (2004) Understanding erectile dysfunction medication preference studies. Curr Opin Urol 14:367–373PubMedCrossRef 6. McMahon CG, Althof SE, Waldinger MD, Porst H, Dean J, Sharlip ID, Adaikan PG, Becher…