Parveen Kumar, DBE, BSc, MD, DM, DEd, FRCP, FRCP(L&E), FRCPath, FIAP, Professor of Medicine & Education, Barts and The London School of Medicine and Dentistry, Queen Mary, University of London, and Honorary Consultant Physician and Gastroenterologist, Barts Health NHS Trust and Homerton Hospital NHS Foundation Trust, London, UK and Michael L. Clark, MD, FRCP, Honorary Senior Lecturer, Barts and The London School of Medicine and Dentistry, Queen Mary,University of London and Consultant Physician, Princess Grace Hospital, London, UK
You may choose not to allow some types of cookies. However, blocking some types may impact your experience of our site and the services we are able to offer. See the different category headings below to find out more or change your settings.
Manage Consent Preferences
Strictly Necessary Cookies
These cookies are necessary for the website to function and cannot be switched off in our systems. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. You can set your browser to block or alert you about these cookies, but some parts of the site will not then work. These cookies do not store any personally identifiable information.
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site.
These cookies may be set through our site by our advertising partners. They may be used by those companies to build a profile of your interests and show you relevant adverts on other sites. If you do not allow these cookies, you will experience less targeted advertising.