1. is a medical student, University of Nebraska Medical Center College of Medicine, Omaha, Nebraska.
2. is a resident, Department of Anesthesiology, University of Nebraska Medical Center, Omaha, Nebraska.
3. is a resident, Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, Nebraska.
4. is assistant professor, Leon S. McGoogan Health Sciences Library, University of Nebraska Medical Center, Omaha, Nebraska.
5. is professor of medicine, Department of Anesthesiology, University of Nebraska Medical Center, Omaha, Nebraska.
6. is associate professor, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska.
7. is assistant professor, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska.