RT Journal Article SR Electronic T1 Unmasking hidden disease: exercise pulmonary haemodynamics in systemic sclerosis JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1700885 DO 10.1183/13993003.00885-2017 VO 50 IS 1 A1 Robin Condliffe YR 2017 UL http://erj.ersjournals.com/content/50/1/1700885.abstract AB