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Chirchir, Habiba, Tracy L. Kivell, Christopher B. Ruff, Jean-Jacques Hublin, Kristian J. Carlson, Bernhard Zipfel, and Brian G. Richmond. "Recent Origin of Low Trabecular Bone Density in Modern Humans." Proc Natl Acad Sci U S A 2015.

Chirchir, Habiba, et al. "Recent Origin of Low Trabecular Bone Density in Modern Humans." Proc Natl Acad Sci U S A 2015.