15
Participants
Start Date
April 30, 2014
Primary Completion Date
October 31, 2016
Study Completion Date
December 31, 2016
Sildenafil citrate
Sildenafil citrate 25 mg, 1 capsule three times a day for 3 months
Placebo Oral Capsule
placebo capsules, 1 capsule po three times a day for 3 months
Vanderbilt University Medical Center, Nashville
Vanderbilt University Medical Center
OTHER