[1] Golden Jubilee Natl Hosp, Scottish Pulm Vasc Unit, Glasgow, Lanark, Scotland
[2] Univ Med Ctr Regensburg, Regensburg, Germany
[3] Umea Univ, Cardiol & Heart Ctr, Dept Publ Hlth & Clin Med, Umea, Sweden
[4] Actel Pharmaceut Ltd, Allschwil, Switzerland
[5] StatFinn Estonia OU, Tartu, Estonia
[6] Hosp 12 Octubre, CIBERCV, Cardiol Dept, Pulm Hypertens Unit, Madrid, Spain
[7] Mater Misericordiae Univ Hosp, Natl Pulm Hypertens Unit, Dublin, Ireland
[8] Queen Elizabeth Univ Hosp, Glasgow, Lanark, Scotland
[9] Gartnavel Royal Hosp, Glasgow, Lanark, Scotland