Gass, N
Becker, R
Schwarz, A J
Weber-Fahr, W
Clemm von Hohenberg, C
Vollmayr, B
Sartorius, A
Article History
Received: 21 June 2016
Revised: 15 September 2016
Accepted: 28 September 2016
First Online: 6 December 2016
Competing interests
: Dr Schwarz is an employee and shareholder of Eli Lilly and Company. The remaining authors declare no conflict of interest.