Windfuhr, Jochen P. http://orcid.org/0000-0002-3924-0461
Chen, Yue-Shih
Article History
Received: 7 June 2019
Accepted: 24 June 2019
First Online: 29 June 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors. The study was exempt from ethical approval according to ยง15 of the Professional Code of Conduct of the regional medical Association (Nordrhein).