1 Division of Pulmonary, Allergy, Critical Care, Occupational, and Sleep Medicine, Indiana University School of Medicine, 1120 W. Michigan Street, CL285, Indianapolis, IN, 46202, USA. gbosslet@iu.edu.
2 Intensive Care Medicine, University Medical Center-Utrecht, Utrecht, The Netherlands.
3 Critical Care Medicine, Center for Bioethics and Health Law, University of Pittsburgh, Pittsburgh, PA, USA.