Ellis, K L
Zhou, Y
Beshansky, J R
Ainehsazan, E
Selker, H P
Cupples, L A
Huggins, G S
Peter, I
Article History
Received: 11 September 2014
Revised: 17 December 2014
Accepted: 28 January 2015
First Online: 17 March 2015
Competing interests
: The authors declare no conflict of interest.