RT Journal Article SR Electronic T1 Connective tissue disease-associated pulmonary arterial hypertension: “Beijing style” JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 839 OP 841 DO 10.1183/09031936.00090814 VO 44 IS 4 A1 Lorinda Chung A1 Steven M. Kawut YR 2014 UL http://erj.ersjournals.com/content/44/4/839.abstract AB