Kotsakis, A
Matikas, A
Koinis, F
Kentepozidis, N
Varthalitis, I I
Karavassilis, V
Samantas, Ep
Katsaounis, P
Dermitzaki, E K
Hatzidaki, D
Mavroudis, D
Georgoulias, V
Article History
Received: 1 April 2016
Revised: 3 August 2016
Accepted: 14 August 2016
First Online: 8 September 2016
Competing interests
: All the authors have no relevant financial interests. The authors declare no conflict of interest.