ORIGINAL RESEARCH—ED PHARMACOTHERAPY: Therapeutic Response after First Month of Tadalafil Treatment Predicts 12 Months Treatment Continuation in Patients with Erectile Dysfunction: Results from the DETECT StudyThierry Roumeguère; Benny Verheyden; Stefan Arver; Alain Bitton; Mark Belger; Henry Schmitt; for the DETECT study investigators · 2008