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A summary of the different treatment strategies applied in the analyzed study group.
| Treatment strategy | Patients |
|---|---|
| Sildenafil + endothelin receptor antagonist | 14 |
| Sildenafil + treprostinil | 3 |
| Sildenafil + endothelin receptor antagonist + treprostinil | 3 |
| Sildenafil in monotherapy | 2 |
| Endothelin receptor antagonist in monotherapy | 2 |
| Sildenafil + iloprost | 1 |
| Sildenafil + riociguat | 1 |
