King, M L
Lindberg, M E
Stodden, G R
Okuda, H
Ebers, S D
Johnson, A
Montag, A
Lengyel, E
MacLean II, J A
Hayashi, K
Article History
Received: 10 March 2014
Revised: 1 July 2014
Accepted: 19 July 2014
First Online: 1 September 2014
Competing interests
: The authors declare no conflict of interest.