Wierichs, R. J. http://orcid.org/0000-0002-4239-199X
Kramer, E. J.
Wolf, T. G.
Naumann, M.
Meyer-Lueckel, H.
Article History
Received: 23 April 2018
Accepted: 9 July 2018
First Online: 25 July 2018
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interests.
: This study was a prospective, non-interventional, multi-center, clinical study without the need for local review board approval according to ethical committee of the Medial Chamber of Lower Saxony. This study conforms to the STROBE guideline for cohort studies [CitationRef removed]. The study has been registered in the German Clinical Trials Register (DRKS-ID: DRKS00012882).
: For this type of study, formal consent is not required.