1. Department of Medicine, John H. Storger Jr. Hospital of Cook County, Chicago, Illinois, USA
2. Department of Medicine, Lagos University Teaching Hospital, Lagos, Nigeria
3. Department of Medicine, Windsor University School of Medicine, Saint Kitts and Nevis
4. Department of Critical Care, Mercy Hospital, Rogers, Arkansas, USA
5. Department of Hospital Medicine, University of Florida, Gainesville, Florida, USA
6. Department of Medicine, Yale School of Medicine, New Haven, Connecticut, USA