59
Participants
Start Date
January 31, 2013
Primary Completion Date
December 31, 2015
Study Completion Date
December 31, 2015
Sildenafil
National Institute of Health, Bethesda
Center for Neuroscience and Regenerative Medicine (CNRM)
FED
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
National Institutes of Health (NIH)
NIH
Uniformed Services University of the Health Sciences
FED