[1] Bologna Univ Hosp, Inst Cardiol, I-40138 Bologna, Italy
[2] Hannover Med Sch, Dept Pulm Med, Hannover, Germany
[3] Hop Antoine Beclere, Serv Pneumol & Reanimat Resp, Clamart, France
[4] Inst Lung Dis & TB, Dept Chest Med, Warsaw, Poland
[5] Univ Libre Bruxelles, Hop Erasme, Dept Cardiol, Brussels, Belgium
[6] Hosp Clin Barcelona, Serv Pneumol, Barcelona, Spain
[7] Hop Enfants, Unite Cardiopediat, Geneva, Switzerland
[8] Newcastle Univ, Inst Cellular Med, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
[9] Mater Misericordiae Univ Hosp, Pulm Hypertens Unit, Dublin, Ireland
[10] Hammersmith Hosp, Dept Cardiol, London, England
[11] Hosp Doce Octubre, Dept Microbiol, Madrid, Spain
[12] Hop Bichat Claude Bernard, Serv Cardiol, F-75877 Paris, France
[13] Med Univ Vienna, Div Cardiothorac Surg, Vienna, Austria
[14] DRK Kliniken Berlin Kopenick, Dept Internal Med Cardiol, Berlin, Germany
[15] Univ Glasgow, Western Infirm, Scottish Pulm Vasc Unit, Glasgow G11 6NT, Lanark, Scotland
[16] Univ Hosp, Dept Cardiol, Basel, Switzerland
[17] Hop Antoine Beclere, Dept Pneumol, Clamart, France
[18] Hop Antoine Beclere, ICU, Clamart, France