RT Journal Article SR Electronic T1 The changing role of mechanical ventilation in COPD JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 393 OP 398 DO 10.1183/09031936.96.09030393 VO 9 IS 3 A1 Shneerson, JM YR 1996 UL https://publications.ersnet.org//content/9/3/393.abstract AB