Around the 1980's patients were admitted to hospital for minimally 6 weeks to cure their duodenal ulcers. We were taught at the time that this was a psychiatric disease. Today we know it is an infection and treatment is generally at home by the general practitioner with drugs rather than with operations. We can expect many similar spectacular developments for diseases like rheumatoid arthritis and cancer in the near future.

Dr. Adam Cohen, Professor of Clinical Pharmacology at the University of Leiden and director of the Centre for Human Drug Research (CHDR).