We ask you to give us contact details of someone who you don’t live with (e.g., a relative, a neighbour, a friend) so that we can get in touch with them if we are unable to contact you. We ask you to let this person know if you’ve passed on their details to the study. We refer to these people as ‘Stable Contacts’. In rare circumstances we may contact your stable contacts if someone tells us that you are at risk of harm.