RT Journal Article SR Electronic T1 Severe pulmonary hypertension in histiocytosis X: long-term improvement with bosentan JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 202 OP 204 DO 10.1183/09031936.00004810 VO 36 IS 1 A1 L. Kiakouama A1 V. Cottin A1 B. Etienne-Mastroïanni A1 C. Khouatra A1 M. Humbert A1 J.F. Cordier YR 2010 UL http://erj.ersjournals.com/content/36/1/202.abstract AB