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. 2018 Sep 10;8(9):e021311. doi: 10.1136/bmjopen-2017-021311

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© Author(s) (or their employer(s)) 2018. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

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Flow chart describing design and available data. GIS, Geographic Intelligent Software; HELIX, Human Early Life Exposome; miRNA, microRNA; mtDNA, mitochondrial DNA. *Omics data available after quality control