Frandes, Mirela http://orcid.org/0000-0002-5249-6859
Timar, Bogdan http://orcid.org/0000-0002-0993-6206
Timar, Romulus
Lungeanu, Diana
Article History
Received: 28 February 2017
Accepted: 13 June 2017
First Online: 24 July 2017
Competing Interests
: The authors declare that they have no competing interests.