A MULTINATIONAL, MULTICENTRE, RANDOMIZED, DOUBLE-BLIND STUDY TO ASSESS THE EFFICACY AND SAFETY OF ORAL SILDENAFIL 20MG TID OR PLACEBO WHEN ADDED TO BOSENTAN IN THE TREATMENT OF SUBJECTS, AGED 18 YEARS AND ABOVE, WITH PULMONARY ARTERIAL HYPERTENSION PAH - ND A MULTINATIONAL, MULTICENTRE, RANDOMIZED, DOUBLE-BLIND STUDY TO ASSESS THE EFFICACY AND SAFETY OF OR ...
A MULTINATIONAL, MULTICENTRE, RANDOMIZED, DOUBLE-BLIND STUDY TO ASSESS THE EFFICACY AND SAFETY OF ORAL SILDENAFIL 20MG TID OR PLACEBO WHEN ADDED TO BOSENTAN IN THE TREATMENT OF SUBJECTS, AGED 18 YEARS AND ABOVE, WITH PULMONARY ARTERIAL HYPERTENSION PAH - ND A MULTINATIONAL, MULTICENTRE, RANDOMIZED, DOUBLE-BLIND STUDY TO ASSESS THE EFFICACY AND SAFETY OF OR ...