1. Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
2. Department of Anesthesia, Critical Care and Pain Medicine, Center for Anesthesia Research Excellence (CARE), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
3. Department of Anesthesia, Intensive Care and Pain Management, Faculty of Medicine, University of Jordan, Amman, Jordan.
4. Divisão de Pneumologia, Cardiopulmonary Department, Heart Institute (INCOR), São Paulo, SP, Brazil.
5. Division of Pulmonary and Critical Care, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
6. Department of Anesthesiology, Düsseldorf University Hospital, Düsseldorf, Germany.