Whaley, Christopher
Article History
Received: 11 December 2017
Revised: 28 February 2018
Accepted: 18 May 2018
First Online: 4 June 2018
Compliance with Ethical Standards
: This study was approved by the Institutional Review Boards of the RAND Corporation and the University of California, Berkeley.
: The author declares that he does not have a conflict of interest.