A Microsoft-Excel-based tool for conducting the DeRmal Exposure Assessment Method (DREAM).

"the english and the spanish versions of the ms-excel-based tool for the dream method can be downloaded at the web site and at the github repository of the infants' environmental health program (isa): http://www isa una ac cr/index php/es/publicaciones-y-materiales/dream https://github com/programa-isa/dream ."

"Conflict of interest The authors declare no conflict of interest relating to the material presented in this letter to the editor. Its contents, including any opinions and/or conclusions expressed, are solely those of the authors."

"The development of the MS-Excel-based tool was supported with funding by the National Institutes of Health Fogarty International Center grant number D43TW011403 entitled ‘International Training Program in Environmental Health over the Lifespan’ (Claudio L & van Wendel de Joode B, PIs), a grant assigned to the Icahn School of Medicine at Mount Sinai and the Universidad Nacional, Costa Rica."