Ethical approval was obtained from ALSPAC’s Law and Ethics Committee, a registered Institutional Review Board and LREC. Information was included at the end of the questionnaire about help sources that participants could contact. Due to ALSAC’s rigorous anonymity rules, the research team could not follow up any participants with regard to their responses. However, participants could request on the questionnaire that a member of the ALSPAC team contact them with regard to the issues raised.
