RT Journal Article SR Electronic T1 The challenge of breathlessness in the detection of pulmonary hypertension JF European Respiratory Review JO EUROPEAN RESPIRATORY REVIEW FD European Respiratory Society SP 1 OP 3 DO 10.1183/09059180.00008511 VO 21 IS 123 A1 F. Blasi YR 2012 UL http://err.ersjournals.com/content/21/123/1.abstract AB