Thönnes, Stefanie http://orcid.org/0000-0003-4777-0961
Article History
Received: 21 August 2018
Accepted: 31 July 2019
First Online: 12 August 2019
Compliance with ethical standards
:
: I am an employee of Team Gesundheit GmbH. Apart from that, there are no financial, ethical, or other potential conflicts of interests.
: This article is based on previously available data, and does not involve any new studies of human subjects performed by the author. However, approvals from the sickness funds were obtained to use their data for this study.