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Sources:
Main source:
https://science.sciencemag.org/content/367/6473/eaaw4325
Other sources:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2776484/
https://n.neurology.org/content/64/12/2004
https://www.sciencedirect.com/science/article/pii/S1364661313002118
https://science.sciencemag.org/content/317/5842/1230
https://science.sciencemag.org/content/323/5920/1492
https://www.nature.com/articles/nature11028
https://science.sciencemag.org/content/341/6144/387
https://www.nature.com/articles/nature08637