1. Columbia University School of Nursing, 630 West 168th Street- Mail Code 6, New York, NY 10032, USA
2. Columbia University Mailman School of Public Health, Department of Biostatistics, New York, NY, USA
3. Columbia University Mailman School of Public Health, Department of Sociomedical Science, New York, NY, USA
4. Columbia University School of Nursing, New York, NY, USA
5. Columbia University Irving Medical Center, Department of Emergency Medicine, New York, NY, USA