Katharios, Pantelis
Seth-Smith, Helena M. B.
Fehr, Alexander
Mateos, José M.
Qi, Weihong
Richter, Denis
Nufer, Lisbeth
Ruetten, Maja
Guevara Soto, Maricruz
Ziegler, Urs
Thomson, Nicholas R
Schlapbach, Ralph
Vaughan, Lloyd
Article History
Received: 5 August 2015
Accepted: 2 November 2015
First Online: 7 December 2015
Competing interests
: The authors declare no competing financial interests.