373 EVALUATION OF THE EFFICACY AND SAFETY OF TADALAFIL 20 MG ON DEMAND VS. TADALAFIL 5 MG ONCE-A-DAY IN THE TREATMENT OF ERECTILE DYSFUNCTION FOLLOWING CURATIVE RADIOTHERAPY FOR PROSTATIC CARCINOMA: PRELIMINARY RESULTS OF A RANDOMIZED PHASE II TRIAL
European Urology Supplements, 2009, 8, 214