Katsarou, A
Triposkiadis, F
Skoularigis, J
Papageorgiou, C
Panagiotakos, D B
Article History
Received: 26 August 2013
Revised: 23 February 2014
Accepted: 19 March 2014
First Online: 30 April 2014
Competing interests
: The authors declare no conflict of interest.