Mr. Tony O'Brien:

The chief medical officer has been quite clear in terms of the incidence of false negatives resulting in later diagnosis of cancer. We are not seeing something that is out of line with what might reasonably be expected in a screening programme based on this technology. However, with the Chairman's agreement, we will provide full written information on the questions that have just been asked because it is far better done by giving it to the Deputy in writing than seeking to give her that kind of information verbally.