1Department of Physical Therapy, Duquesne University, 600 Forbes Avenue, Pittsburgh, PA 15282, USA 2Department of Anthropology, University of Pittsburgh, Pittsburgh, PA 15260, USA 3Department of Anatomy, Dartmouth Medical School, HB 7100, Hanover, NH 03743, USA 4Department of Anthropology, Dartmouth College, HB 6047, Hanover, NH 03743, USA 5Department of Human Evolution, Max Planck Institute fo...