1. Lund University, Department of Clinical Sciences Lund Clinical Physiology and Skåne University Hospital Lund Sweden
2. Cardiology Unit, Department of Medicine Karolinska Institutet Stockholm Sweden
3. Department of Clinical Sciences Lund, Cardiology Lund University Lund Sweden
4. Department of Cardiology University Hospital Uppsala Sweden
5. Actelion Pharmaceuticals Allschwil Switzerland
6. Department of Clinical Sciences Lund, Section for Rheumatology Lund University and Skåne university hospital Lund Sweden
7. Department of Cardiology and Department of Clinical Physiology Institution of Medicine and Health Science Linköping University Linköping Sweden
8. Lung Unit, Department of Medicine Karolinska Institutet and Karolinska University Hospital Stockholm Sweden
9. The Haemodynamic Lab, The Section for Heart Failure and Valvular Disease, VO. Heart and Lung Medicine Skåne University Hospital Lund Sweden
10. Janssen Cilag AB Solna Sweden
11. Pediatric Heart Center, The Queen Silvia Children's Hospital, Sahlgrenska University Hospital, and Department of Pediatrics, Institute for Clinical Sciences, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
12. Department of Cardiology, Sahlgrenska Academy University of Gothenburg and Sahlgrenska University Hospital Gothenburg Sweden
13. Department of Public Health and Clinical Medicine, Medicine Unit Umeå University Umeå Sweden