1. Department of Medicine and
2. Royal Papworth Hospital, Papworth, United Kingdom
3. Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
4. Department of Haematology, University of Cambridge, Cambridge, United Kingdom
5. National Institute for Health Research BioResource–Rare Diseases, Cambridge, United Kingdom
6. Department of Medical and Molecular Genetics, King’s College London, London, United Kingdom
7. Molecular and Clinical Sciences Research Institute, St. George’s University of London, London, United Kingdom
8. Addenbrooke’s Hospital, Cambridge, United Kingdom
9. Département de Génétique, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, and UMR_S 1166-ICAN, INSERM, UPMC Sorbonne Universités, Paris, France
10. Golden Jubilee National Hospital, Glasgow, United Kingdom
11. Royal Free Hospital, London, United Kingdom
12. Sheffield Pulmonary Vascular Disease Unit, Royal Hallamshire Hospital, Sheffield, United Kingdom
13. University of Newcastle, Newcastle, United Kingdom
14. Department of Molecular Medicine, University of Pavia, Pavia, Italy
15. Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
16. University of Giessen and Marburg Lung Center, member of the German Center for Lung Research (DZL) and of the Excellence Cluster Cardio-Pulmonary Institute, Giessen, Germany
17. National Heart and Lung Institute, Imperial College London, London, United Kingdom
18. Faculté de Médecine, Université Paris-Saclay, Université Paris-Sud, Paris, France
19. Service de Pneumologie, Centre de Référence de l’Hypertension Pulmonaire, Assistance Publique–Hôpitaux de Paris, Paris, France
20. Hôpital Bicêtre, Le Kremlin-Bicêtre, INSERM UMR_S 999, Paris, France
21. Department of Clinical Genetics, Amsterdam Universitair Medische Centra, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
22. Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
23. Medical University of Graz, Graz, Austria
24. Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
25. Royal United Hospitals Bath NHS Foundation Trust, Bath, United Kingdom
26. Great Ormond Street Hospital, London, United Kingdom; and
27. Royal Brompton Hospital, London, United Kingdom