You may have received a text message asking you if you would be wiling to take part in the above research study. This text message is genuine and has been sent by Ainsdale Medical Centre on behalf of Dr Bennett and Liverpool Heart and Chest Hospital.

More information about the study can be found on the attached letter. If you would like to take part in the study, please follow the instructions in your text message. This study is only open to people who meet certain criteria, so if you have not received a message regarding this, we are unable to enrol you in this study.