Assertion: nitrous oxide's effect | /r/CapableOf | administer to single cohort of bph patients
Facets:
value: for at least four weeks
type: TEMPORAL
value: on stable therapy with tamsulosin
type: OTHER
Source sentences:
text: This study was designed to evaluate the effect of 10 mg vardenafil (stage 1) and 20 mg vardenafil (stage 2) compared to placebo, when administered to a single cohort of BPH patients (n=23) on stable therapy with tamsulosin 0.4 mg or 0.8 mg daily for at least four weeks.