title: The authors reply.
authors.affiliation: Department of Anesthesiology and Critical Care Medicine, Children's Hospital Los Angeles Keck School of Medicine, University of Southern California, Los Angeles, CA.
authors.forename: Anoopindar
authors.initials: A
authors.lastname: Bhalla
authors.forename: Christopher
authors.initials: C
authors.lastname: Newth
authors.forename: Robinder
authors.initials: R
authors.lastname: Khemani
mesh_terms: D016638:Critical Illness / Q000401:mortality*; D005260:Female; D017052:Hospital Mortality; D006801:Humans; D008297:Male; D012121:Respiration, Artificial / Q000379:methods*; D012126:Respiratory Dead Space / Q000502:physiology*; D012131:Respiratory Insufficiency / Q000401:mortality* / Q000628:therapy*