1. College of Medicine, University of Nebraska Medical Center, Omaha, NE, United States
2. College of Public Health, University of Nebraska Medical Center, Omaha, NE, United States
3. Papillion, NE, USA
4. Ashland, MO, USA
5. Oakland, NE, USA
6. Nebraska Medicine, Omaha, NE, USA
7. Monmouth Medical Center, Long Branch, NJ, USA
8. Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA