[1] Univ Hosp, Lab Immunoregulat, B-9000 Ghent, Belgium
[2] Univ Hosp, Dept Resp Med, B-9000 Ghent, Belgium
[3] Univ Paris Sud, Fac Med, F-94276 Le Kremlin Bicetre, France
[4] Hop Antoine Beclere, AP HP, Serv Pneumol & Reanimat Resp, Ctr Natl Reference Hypertens Pulm Severe, F-92140 Clamart, France
[5] INSERM, Pulm Hypertens Pathophysiol & Novel Therapies, LabEx LERMIT, UMR S 999, F-92350 Le Plessis Robinson, France
[6] Ctr Chirurg Marie Lannelongue, Res Dept, F-92350 Le Plessis Robinson, France
[7] Univ Hosp Antwerp, Dept Pathol, B-2650 Edegem, Belgium