Participants can withdraw their participation from the study at any time without giving a reason and if this happens, the data collected from their interviews/questionnaires will not be used in the study results. Adult participants will be told that they can tell the researcher if they would like to withdraw. The researcher will agree a word or sign with child participants to indicate that they would like to stop taking part and the researcher will then ask them whether they would like the data used to be included in the results of the study.