Pietzka, Sebastian
Kämmerer, Peer W. http://orcid.org/0000-0002-1671-3764
Pietzka, Silke
Schramm, Alexander
Lampl, Lorenz
Lefering, Rolf
Bieler, Dan
Kulla, Martin http://orcid.org/0000-0001-7454-0876
Article History
Received: 2 October 2018
Accepted: 11 July 2019
First Online: 3 August 2019
Compliance with ethical standards
:
: Sebastian Pietzka declares that he has no conflict of interest. Peer W. Kämmerer declares that he has no conflict of interest. Silke Pietzka declares that she has no conflict of interest. Alexander Schramm declares that he has no conflict of interest. Lorenz Lampl declares that he has no conflict of interest. Rolf Lefering declares that he has no conflict of interest. Dan Bieler declares that he has no conflict of interest. Martin Kulla declares that he has no conflict of interest.
: The present study has been approved by the Ethic Committee of the Medical School of the University of Ulm (positive Vote 17th December 2017). All procedures were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: For this type of study, formal consent is not required.
Free to read: This content has been made available to all.