Professor Dame Carol Black DBE, PRCP, President of the Royal College of Physicians, Professor and Head Of Academic and Clinical Department of Rheumatology, The Royal Free Hospital and University College London, UK. Professor David Abraham PhD, Head of Research, Academic and Clinical Department of Rheumatology, The Royal Free Hospital and University College London, UK. Dr Gerry Coghlan MD, Consultant Cardiologist, Director of the Pulmonary Hypertension Unit, The Royal Free Hospital, London, UK. Dr Michael Dashwood, PhD, Senior Lecturer in Biochemistry, University College London, UK. Dr Christopher Denton, PhD, Senior Lecturer and Consultant Rheumatologist, The Royal Free Hospital and University College London, UK. Dr Clive Handler MD, Honorary Consultant, Pulmonary Hypertension Unit, The Royal Free Hospital, London, UK. All the authors are internationally respected and leading clinical and basic scientists and clinicians.