 I think a lot of professionals and a lot of practitioners including teachers often struggle about what they should be doing with regards to prevention around NPS. It's a new topic, people don't quite have the required information, there's a lot of misinformation not only amongst the professions but also the general public and media. So prevention practitioners can sometimes panic that they should be doing something but they don't quite know what that is and this might mean that they make inappropriate decisions about what they should be doing with regards to prevention but there's no need to panic as we have an emerging evidence base with regards to effective approaches, how we engage target populations and what sort of activities we should be delivering but these are quite general approaches. I don't think we need at this point very specific NPS related prevention activities particularly in the school and family setting. We build upon skills with regards to life skills, health literacy, risk assessment and once we get those basics right then perhaps we can think about providing specialist information and advice around NPS but the important consideration is get the basics of prevention right first before you overcomplicate things by introducing NPS.