Dallas (Children's Hospital)
Dallas (University of Texas Southwestern)
Edmonton (University of Alberta)
Fort Wayne (Lutheran Hospital)
Hamilton (St. Joseph's Hospital)
Kansas City (Research Medical Center)
Kansas City (Saint Luke's Hospital of Kansas City)
Kansas City (Univ of Kansas Med Center)
Louisville (Jewish Hospital)
New York (Montefiore Medical Center)
Portland (Oregon Health Sciences University)
Portland (Portland VA Medical Center)
Quebec (CHUQ - Pavillon l'Hotel-Dieu de Quebec)
Toronto (General Hospital)
Toronto (St. Michael's Hospital)
Valhalla (Westchester Medical Center)
Winnipeg (Health Sciences Centre)
Ann Arbor
Chicago (Children's Memorial Hospital)
Columbus
Dallas (Children's Medical Center)
Dallas (University of Texas Southwestern)
Edmonton (University of Alberta Hospital)
Fort Wayne (Lutheran Hospital of Indiana)
Kansas City (The University of Kansas Hospital)
Loma Linda (Loma Linda University Medical Center & Children's Hospital)
London (London Health Sciendes Centre)
Louisville (Jewish Hospital)
Miami (University of Miami/Jackson Memorial Hospital)
Milwaukee (St. Luke's Medical Center)
Montreal (Institut de Cardiologie de Montreal)
New York
Portland (Oregon Health & Sciences University)
Quebec (Institut Universitaire de Cardiologie et de Pneumologie de Québec (IUCPQ))
San Francisco (University of California at San Francisco)
Tucson (University Medical Center)
Winnipeg (Manitoba Lung Transplant Program)
Dallas (Baylor)
Dallas (Children's Medical Center)
Edmonton (University of Alberta Hospital)
Louisville (Jewish Hospital)
Portland (Veterans Affairs Med. Center)
Toronto (Toronto General Hospital)
Dallas (University of Texas Southwestern)
Edmonton (University of Alberta Hospital)
Louisville (Jewish Hospital)
Portland (Oregon Health Sciences University)
Toronto (General Hospital)