Authors: Tim H Heupink; Sankar Subramanian; Joanne L Wright; Phillip Endicott; Michael Carrington Westaway; Leon Huynen; Walther Parson; Craig D Millar; Eske Willerslev; David M Lambert Journal: Proc Natl Acad Sci U S A Date: 2016-06-06 Impact factor: 11.205