1. Pulmonary Hypertension Research GroupCentre de Recherche de l'Institut Universitaire de Cardiologie et Pneumologie de Quebec CityQuebecCanada
2. Division of PulmonaryCritical Care, Sleep and Occupational MedicineIndiana University School of MedicineIndianapolisINUSA
3. Department of Anesthesiology and Perioperative MedicineDivision of Molecular MedicineDavid Geffen School of Medicine at University of California Los AngelesLos AngelesCAUSA
4. Division of Translational and Regenerative MedicineUniversity of ArizonaTucsonAZUSA
5. Pittsburgh Heart, Lung and Blood Vascular Medicine InstituteDivision of CardiologyDepartment of MedicineUniversity of Pittsburgh School of MedicinePittsburghPAUSA