1. Center for Clinical Epidemiology and BiostatisticsPerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
2. Department of MedicinePerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
3. Sidney Kimmel Medical College at Thomas Jefferson UniversityPhiladelphiaPAUSA
4. Department of MedicineDivision of Cardiovascular MedicinePerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
5. Division of CardiologyRichard A. and Susan F. Smith Center for Cardiovascular Outcomes ResearchBeth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA
6. Department of MedicineDivision of Cardiovascular MedicineVanderbilt UniversityNashvilleTNUSA
7. University of Virginia Health SystemCharlottesvilleVAUSA
8. Department of MedicinePulmonary Hypertension ProgramPerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
9. Department of MedicineDivision of PulmonaryAllergy and Critical CarePerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
10. Pulmonary Hypertension, Right Heart Failure and Pulmonary Thromboendarterectomy ProgramTemple University HospitalPhiladelphiaPAUSA