Mitrou, P
Petsiou, E
Papakonstantinou, E
Maratou, E
Lambadiari, V
Dimitriadis, P
Spanoudi, F
Raptis, S A
Dimitriadis, G
Article History
Received: 7 April 2014
Revised: 1 December 2014
Accepted: 17 December 2014
First Online: 28 January 2015
Competing interests
: The authors declare no conflict of interest.