1. University of Toledo Medical Center Toledo OH
2. Alliance for Paired Donation Perrysburg OH
3. University of Minnesota Minneapolis MN
4. Virginia Mason Medical Center Seattle WA
5. Scripps Green Hospital La Jolla CA
6. Wake Forest Baptist Medical Center Winston‐Salem NC
7. ABC Medical Center Mexico City Mexico
8. Stanford University Stanford CA
9. Duke University Durham NC
10. Piedmont Hospital Atlanta GA
11. University of the Philippines–Philippine General Hospital Manila Philippines
12. St. Luke's Medical Center‐Global City Manila Philippines