Using Serifin to Treat PHA? What's the Difference?

Two studies specifically evaluated therapies for pulmonary arterial hypertension, or PAH. These patients are also referred to as having WHO group one pulmonary hypertension. What about PAH compared to other groups of pH? Do you think we should keep in mind as we move forward in this discussion? I think it's important to note that these articles, as you mentioned, are both for pulmonaryarterial hypertension.