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doi: https://doi.org/10.1038/d41586-018-05507-0
Updates & Corrections
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Update 21 June 2018: The graphic ‘The economics of migration’ was added to this story.
References
d’Albis, H., Boubtane, E. & Coulibaly, D. Sci. Adv. 4, eaaq0883 (2018).