Food sharing is linked to urinary oxytocin levels and bonding in related and unrelated wild chimpanzees

Roman M. Wittig(Université Claude Bernard Lyon 1), Klaus Zuberbühler(Natural Resources Conservation Service), Kevin E. Langergraber(Boston University), Toni E. Ziegler(University of Wisconsin–Madison), Catherine Crockford(Université Claude Bernard Lyon 1), Tobias Deschner(Max Planck Institute for Evolutionary Anthropology)
Proceedings of the Royal Society B Biological Sciences
January 15, 2014
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