Fig. 1From: Medium-term health-related quality of life in patients with pulmonary arterial hypertension treated with goal-oriented sequential combination therapy based on exercise capacityStudy protocol. Goal-based therapeutic algorithm used in the present study for patients with newly diagnosed pulmonary arterial hypertension (PAH). ERA, endothelin receptor antagonist; PDE-5, phosphodiesterase-5; WHO FC, World Health Organization functional classBack to article page