SlavĂk, Radan
Marra, Giuseppe
Fokoua, Eric Numkam
Baddela, Naveen
Wheeler, Natalie V.
Petrovich, Marco
Poletti, Francesco
Richardson, David J.
Article History
Received: 24 June 2015
Accepted: 22 September 2015
First Online: 22 October 2015
Competing interests
: The authors declare no competing financial interests.