1 Safar Center for Resuscitation Research, United States; Department of Critical Care Medicine, United States; Department of Pediatrics, United States; University of Pittsburgh School of Medicine, United States. Electronic address: kochanekpm@pitt.edu.
2 Safar Center for Resuscitation Research, United States; Department of Pediatrics, United States; University of Pittsburgh School of Medicine, United States.
3 Safar Center for Resuscitation Research, United States; Department of Emergency Medicine, United States; University of Pittsburgh School of Medicine, United States.