Baer, R J
Chambers, C D
Ryckman, K K
Oltman, S P
Norton, M E
Jelliffe-Pawlowski, L L
Article History
Received: 10 August 2016
Revised: 16 September 2016
Accepted: 30 September 2016
First Online: 8 December 2016
Competing interests
: The authors declare no conflict of interest.