The phenotypic legacy of admixture between modern humans and Neandertals | Science
https://science.sciencemag.org/content/351/6274/737.abstractWhat Did Neanderthals Leave to Modern Humans? Some Surprises - The New York Times
https://www.nytimes.com/2017/01/20/science/john-anthony-capra-neanderthals-dna-humans.html