40
Participants
Start Date
March 31, 2005
Primary Completion Date
April 30, 2009
Study Completion Date
May 31, 2009
Sildenafil
12.5 mg Sildenafil once with optional second dose
Sildenafil
12.5 mg orally once with optional second dose
Placebo
Oral Placebo in 5 mls distilled water
St. Michael's Hospital, Toronto
University of Toronto
OTHER
Unity Health Toronto
OTHER