Bauer, L B
Reynolds, L J
Douglas, S M
Kearney, M L
Hoertel, H A
Shafer, R S
Thyfault, J P
Leidy, H J
Article History
Received: 4 March 2015
Revised: 19 May 2015
Accepted: 24 May 2015
First Online: 1 June 2015
Competing interests
: The authors declare no conflict of interest.