"We do not believe that the methodologies seen so far meet the high scientific standards required to responsibly investigate the mental health of children and adolescents. Although nothing in the leaks suggests that social media causes suicide, self-harm, or mental illness, these are serious research topics. This work, and the tools you are using should not be developed without independent oversight. Sound science must come before firm conclusions are drawn or new tools are launched. You and your organisations have an ethical and moral obligation to align your internal research on children and adolescents with established standards for evidence in mental health science."