Clinoptilolite Study

6. This reference was excluded as it was not a clinical study, but very short and hypothetical letter to the editor without any clinical data. In this letter the authors merely hypothesize one possible use of clinoptilolite solution for trapping the lead into its nano-pores and improving the clinical presentation of children with ADHD, but also state that clinical studies and clinical data are needed if this hypothesis is to be confirmed. Therefore this study should be excluded, following the standards and guidelines of conducting clinical