Laidig, Friederike
May, Marcus http://orcid.org/0000-0002-7513-4244
Brinkmann, Julia
Schneider, Nils
Stichtenoth, Dirk O.
Article History
First Online: 23 April 2018
Compliance with ethical standards
:
: The study was approved by the Ethical Review Committee of Hannover Medical School (no: 1637-2012) according to German regulations. 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. Formal consent is not required for this type of study. This article does not contain any studies with animals performed by any of the authors.
: Informed consent from participants was not required as the retrospective study design did not affect the healthcare of included patients. All personal data were subjected to pseudonymization, and retracing was not possible without the pseudonym key. All data were analysed anonymously.
: This study received no external funding.
: Friederike Laidig, Marcus May, Julia Brinkmann, Nils Schneider and Dirk O. Stichtenoth have no conflicts of interest.