title: The authors reply.
authors.affiliation: Department of Critical Care Medicine, Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA; Departments of Critical Care Medicine and Neurological Surgery, Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA.
authors.forename: Steven L
authors.initials: SL
authors.lastname: Shein
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Bell