1. University of Sheffield; Academic Unit of Radiology; Sheffield UK
2. Cairo University; KasrAlAiny School of Medicine; Cairo Egypt
3. St Bartholomew's Hospital, Barts Health NHS Trust; Barts Heart Centre; London UK
4. Nottingham University Hospitals NHS Trust; Department of Gastroenterology; Derby Road Nottingham East Midlands UK NG7 2UH
5. Saint Luke’s Mid America Heart Institute; University of Missouri-Kansas City; Department of Cardiovascular Medicine; Kansas City MO USA
6. University of Sheffield; Department of Infection, Immunity and Cardiovascular Disease; Sheffield UK