Nastasi, Claudia
Candela, Marco
Bonefeld, Charlotte Menné
Geisler, Carsten
Hansen, Morten
Krejsgaard, Thorbjørn
Biagi, Elena
Andersen, Mads Hald
Brigidi, Patrizia
Ødum, Niels
Litman, Thomas
Woetmann, Anders
Article History
Received: 10 April 2015
Accepted: 23 September 2015
First Online: 6 November 2015
Competing interests
: The authors declare no competing financial interests.