Participants should be issued with consent letter detailing all relevant info that might affect their decision to participate. At end of study, participants should be given full debrief. Within this, participants should be made aware of true aims of study and any details previously withheld. Should be told what data will be used for and be given the right to withdraw during and withhold data after study. Personal details must be protected. Refer to participants using initials/numbers when writing up investigation.