A Declaration of Competing Interest statement was not included in the published version of the above-mentioned article:
The appropriate Declaration/Competing Interest statements, provided by the Authors, are included below.
Declaration of Competing Interest
Tilman Laubert and Hamed Esnaashari are co-founders of LTB Ltd.
All other authors (Michael Thomaschewski, Markus Zimmermann, Reinhard Vonthein, Tobias Keck and Claudia Benecke) declare that they have no conflict of interest.