Funding for this research was provided by:
Baden-Württemberg Stiftung (Eliteprogram for Postdocs)
Article History
Received: 1 December 2017
Accepted: 18 June 2018
First Online: 28 June 2018
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Committee of Ethics of the Medical Faculty of the Albert Ludwigs University Freiburg, Germany, and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.