To take part in the trial, you need to meet all of the eligibility criteria. Some of the criteria are detailed here to help you decide whether you might be able to take part.

If you think you may be eligible, and would like to take part, please contact your doctor, who may already be taking part in the COBALT Trial or may be able to refer you to your nearest COBALT trial centre. The full list of participating NHS Trusts can be found by clicking COBALT NHS TRUSTS.

Please see the section on ‘What will happen after I express interest in taking part?’ to find out what will happen next.