Assertion: viagra's sildenafil | /r/ObjectUse | used in limited number of children†
Facets:
value: effectively
type: MANNER
Source sentences:
text: Although sildenafil has been used effectively in a limited number of children† for symptomatic treatment of PAH,158 205 206 FDA currently recommends that the drug not be used for treatment of PAH in patients <18 years of age.233 248