1. Ascension St. John Hospital, Detroit, MI, USA
2. The Johns Hopkins Hospital, Baltimore, MD, USA
3. Northwest Hospital & Medical Center–UW Medicine, Seattle, WA, USA
4. Wake Forest Baptist Health, Winston-Salem, NC, USA
5. UK HealthCare, Lexington, KY, USA
6. Indiana University Health, Indianapolis, IN, USA
7. Nebraska Medicine, Omaha, NE, USA