Papadaki, C
Sfakianaki, M
Lagoudaki, E
Giagkas, G
Ioannidis, G
Trypaki, M
Tsakalaki, E
Voutsina, A
Koutsopoulos, A
Mavroudis, D
Georgoulias, V
Souglakos, J
Article History
Revised: 17 July 2014
Accepted: 13 August 2014
First Online: 18 September 2014
Competing interests
: The authors declare no conflict of interest.