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Fig. 2 | BMC Pulmonary Medicine

Fig. 2

From: Medication use by US patients with pulmonary hypertension associated with chronic obstructive pulmonary disease: a retrospective study of administrative data

Fig. 2

Selection of study population. CTEPH, chronic thromboembolic pulmonary hypertension; COPD, chronic obstructive pulmonary disease; HF, heart failure; IIP, idiopathic interstitial pneumonia; ILD, interstitial lung disease; LHD, left heart disease; PAH, pulmonary arterial hypertension; PF, pulmonary fibrosis; PH, pulmonary hypertension

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