1. Mercy Radiology Group, Dignity Health, Sacramento, CA.
2. Department of Radiology, University of Michigan Hospital and Health Systems, 1500 E Medical Center Dr, Ann Arbor, MI 48109.
3. Michigan Radiology Quality Collaborative, Ann Arbor, MI.
4. Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH.
5. University of Michigan Medical School, Ann Arbor, MI.