Gurven, Michael
Costa, Megan
Ben Trumble,
Stieglitz, Jonathan
Beheim, Bret
Eid Rodriguez, Daniel
Hooper, Paul L.
Kaplan, Hillard
Article History
Received: 13 April 2016
Accepted: 27 June 2016
First Online: 20 July 2016
Competing interests
: The authors declare no competing financial interests.