17
Participants
Start Date
November 30, 2011
Primary Completion Date
April 30, 2013
Study Completion Date
April 30, 2013
Sildenafil
20 mg in gelatine capsules, oral, three times daily
Placebo
Lactose monohydrate oral in gelatine capsules, 3 times daily
Neuromuscular Clinic and Research Unit, Dept. Neurology, Rigshospitalet,, Copenhagen
Glostrup University Hospital, Copenhagen
OTHER
Rigshospitalet, Denmark
OTHER