well for more on that i'm joined tonight by claudia heinsohn she's an epidemiologist based at the institute that's sweden's largest medical research facility dr hansen it's good to have you on the day you know we just so pictures of children there in sweden in school playing on the playgrounds it's shocking being here in germany seeing that should children in sweden should they be in school. i don't run i thought i don't want to be the one taking a decision but i just want to remind that actually this week separate the same evidence after germany and that simply means no evidence we don't know whether they should or not spread into the deceived into the palin's we still don't have a clue and i'm just simply angry with the right that we do not have the studies we have about being backed into ads if you don't know what the children spent they defeated and we don't have intervention studies actually think what can be down safely and what not to i think it's one question will you you wrote you coauthored an article you know speaking that you're mad with the world you said you wrote that officia