title: The authors reply.
authors.affiliation: CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain, and Multidisciplinary Organ Dysfunction Evaluation Research Network, Research Unit, Hospital Universitario Dr. Negrin, Las Palmas de Gran Canaria, Spain; Department of Respiratory Care, Massachusetts General Hospital, Boston, MA, and Department of Anesthesiology, Harvard University, Boston, MA.
authors.forename: Jesús
authors.initials: J
authors.lastname: Villar
authors.forename: Robert M
authors.initials: RM
authors.lastname: Kacmarek
mesh_terms: D006801:Humans; D012128:Respiratory Distress Syndrome