Zhang, Y
Kollias, G
Argyris, A A
Papaioannou, T G
Tountas, C
Konstantonis, G D
Achimastos, A
Blacher, J
Safar, M E
Sfikakis, P P
Protogerou, A D
Article History
Received: 14 July 2014
Revised: 1 September 2014
Accepted: 29 September 2014
First Online: 13 November 2014
Competing interests
: The authors declare no conflict of interest.