Hellstern, V. http://orcid.org/0000-0002-6332-4681
Aguilar-Pérez, M.
Schob, S.
Bhogal, P.
AlMatter, M.
Kurucz, P.
Grimm, A.
Henkes, H.
Article History
Received: 30 October 2017
Accepted: 19 January 2018
First Online: 5 February 2018
Conflict of interest
: H. Henkes is co-founder and shareholder of phenox GmbH Bochum and Galway. M. Aguilar-Pérez serves as proctor with moderate remuneration for phenox. V. Hellstern, S. Schob, P. Bhogal, M. AlMatter, P. Kurucz and A. Grimm declare that they have no competing interests.