1. Department of Medicine University of South Carolina School of Medicine Columbia South Carolina USA
2. Department of Emergency Medicine St Francis Hospital Columbus Georgia USA
3. Michigan State University East Lansing Michigan USA
4. Center for Biostatistics, Department of Biomedical Informatics The Ohio State University Columbus Ohio USA
5. Department of Emergency Medicine Brigham and Women's Hospital, Harvard Medical School Boston Massachusetts USA
6. Department of Medicine, Division of Pulmonary Critical Care and Sleep Warren Alert Medical School of Brown University Providence Rhode Island USA
7. Brown Center for Biomedical Informatics Brown University Providence Rhode Island USA
8. Department of Emergency Medicine Beth Israel Deaconess Hospital, Harvard Medical School Boston Massachusetts USA