1. Department of PulmonologyInstitute for Cardiovascular ResearchVrije Universiteit (VU) University Medical CenterAmsterdamThe Netherlands
2. Department of PhysiologyInstitute for Cardiovascular ResearchVU University Medical CenterAmsterdamThe Netherlands
3. National Pulmonary Hypertension ServiceHammersmith HospitalImperial College Healthcare National Health Service TrustLondonUnited Kingdom
4. National Institute for Health Research‐Wellcome Trust Imperial Clinical Research FacilityImperial Centre for Translational and Experimental MedicineImperial College LondonLondonUnited Kingdom