Haderlein, Marlen http://orcid.org/0000-0002-7986-2169
Lettmaier, Sebastian
Langheinrich, Melanie
Schmid, Axel
Semrau, Sabine
Hecht, Markus
Beck, Michael
Schmidt, Daniela
Grützmann, Robert
Fietkau, Rainer
Denz, Axel
Article History
Accepted: 22 June 2018
First Online: 2 July 2018
Compliance with ethical standards
:
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: For this retrospective type of study, formal consent is not required.