Sofikitis, Dimitris
Bougas, Lykourgos
Katsoprinakis, Georgios E.
Spiliotis, Alexandros K.
Loppinet, Benoit
Rakitzis, T. Peter
Article History
Received: 9 May 2014
Accepted: 9 July 2014
First Online: 10 September 2014
Competing interests
: The authors declare no competing financial interests.