Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Geographical distribution of patients with pulmonary arterial hypertension (A) and its most frequent subgroups including idiopathic pulmonary arterial hypertension (B), pulmonary arterial hypertension associated with connective tissue disease (C) and pulmonary arterial hypertension associated with congenital heart disease (D).
