RT Journal Article SR Electronic T1 Inspiratory duty cycle responses to flow limitation predict nocturnal hypoventilation JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society DO 10.1183/09031936.00063008 A1 H. Schneider A1 V. Krishnan A1 L.E. Pichard A1 S.P. Patil A1 P.L. Smith A1 A.R. Schwartz YR 2009 UL http://erj.ersjournals.com/content/early/2009/01/07/09031936.00063008.abstract AB