Masic, Admir
Bertinetti, Luca
Schuetz, Roman
Chang, Shu-Wei
Metzger, Till Hartmut
Buehler, Markus J.
Fratzl, Peter
Article History
Received: 12 June 2014
Accepted: 21 November 2014
First Online: 22 January 2015
Competing interests
: The authors declare no competing financial interests.