Gastroenterology Unit;
Agios Savvas Cancer Hospital;
Athens;
Greece;
Section of Nuclear Medicine;
Agios Savvas Cancer Hospital;
Athens;
Greece;
CT Department.Agios Savvas Cancer Hospital;
Athens;
Greece;
First Radiology-Oncology Department;
Agios Savvas Cancer Hospital;
Athens;
Greece;
Pathology Department;
Agios Savvas Cancer Hospital;
Athens;
Greece;
Economics and Statistics Department;
Agios Savvas Cancer Hospital;
Athens;
Greece;
City University London;
London;
United Kingdom;