1. Cicely Saunders Institute of Palliative Care, Policy, and Rehabilitation, King’s College London, London, United Kingdom
2. University of Wollongong, Wollongong, New South Wales, Australia
3. Johns Hopkins School of Nursing, Baltimore, Maryland
4. Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland
5. City of Hope National Medical Center, Duarte, California
6. Division of Neuroscience Critical Care, Departments of Neurology and Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.