Ionescu-Tirgoviste, Constantin
Gagniuc, Paul A.
Gubceac, Elvira
Mardare, Liliana
Popescu, Irinel
Dima, Simona
Militaru, Manuella
Article History
Received: 29 June 2015
Accepted: 2 September 2015
First Online: 29 September 2015
Competing interests
: The authors declare no competing financial interests.