22
Participants
Start Date
May 23, 2015
Primary Completion Date
March 30, 2021
Study Completion Date
March 30, 2021
Sildenafil 20 mg tablets
Placebo tablets (resembling Revatio)
Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago
Stanford University, Stanford
University of Colorado, Denver, Aurora
Ann & Robert H Lurie Children's Hospital of Chicago
OTHER
Stanford University
OTHER