Oizel, K
Gratas, C
Nadaradjane, A
Oliver, L
Vallette, F M
Pecqueur, C
Article History
Received: 16 September 2014
Revised: 20 December 2014
Accepted: 7 January 2015
First Online: 26 March 2015
Competing interests
: The authors declare no conflict of interest.