Straub, Gunter http://orcid.org/0000-0003-3506-3119
Article History
Received: 2 March 2018
Accepted: 24 November 2018
First Online: 10 December 2018
Compliance with ethical guidelines
:
: G. Straub certifies that he has no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stockownership, or other equity interest; and expert testimony or patent-licensing arrangements), or nonfinancial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or materials discussed in this manuscript.
: This article does not contain any studies with human participants or animals performed by any of the authors.