1. Department of MedicineDivision of Pulmonary and Critical Care MedicineUniversity of VermontBurlingtonUSA
2. Department of MedicinePulmonary Hypertension CenterUniversity of ColoradoAuroraUSA
3. Department of MedicineDivision of Cardiovascular MedicineVanderbilt University Medical CenterNashvilleUSA
4. Department of MedicinePulmonary Vascular CenterVanderbilt University Medical CenterNashvilleUSA
5. Department of BiostatisticsVanderbilt University School of MedicineNashvilleUSA
6. Department of PediatricsVanderbilt Pediatric Pulmonary Hypertension ProgramVanderbilt University Medical CenterNashvilleUSA