Oral sildenafil as long-term adjunct therapy to inhaled iloprost in severe pulmonary arterial hypertension
Hossein Ardeschir Ghofrani, Frank Rose, RALPH THEO SCHERMULY, Horst Olschewski, Ralph Wiedemann, André Kreckel, Norbert Weißmann, Stefanie Ghofrani, Beate Enke, Werner Seeger, Friedrich Grimminger
Abstract