University of Maryland, Baltimore, Maryland, United States
Massach General Hospital, Boston, Massachusetts, United States
Hershey Medical Center, Hershey, Pennsylvania, United States
Emory Crawford Long Hospital, Atlanta, Georgia, United States
Loyola University Medical Center, Maywood, Illinois, United States
Bryan LGH Heart Institute, Lincoln, Nebraska, United States
William Beaumont, Royal Oak, Michigan, United States
UPMC Presbyterian Hospital, Pittsburgh, Pennsylvania, United States
Cedars-Sinai Medical Center, Los Angeles, California, United States