Once ethical approval had been obtained, participants were approached in various places in the British public (eg, libraries, cafes, train stations, churches, universities) by various researchers experienced in this technique. Individuals were briefed about the nature of the study and then offered the opportunity to participate. They were assured that their data would remain completely anonymous. Once they had provided informed consent, they completed the five-page questionnaire, which took approximately 15 min to complete. Participants were debriefed after completing the questionnaire. Of those approached, approximately 70% agreed to participate; the majority of the remainder claimed insufficient time to spare.