Gietzelt, Caroline
Fricke, Julia
Neugebauer, Antje
Hedergott, Andrea http://orcid.org/0000-0002-6398-3919
Funding for this research was provided by:
FF-Med Stipendium
Universität zu Köln
Article History
Received: 4 September 2021
Accepted: 4 January 2022
First Online: 17 January 2022
Declarations
:
: The auhthors declare that they do not have any conflict of interest.
: According to regional medical regulations on retrospective single-center clinical studies (§15 of the Professional code of conduct, General Medical Council for the Northern Rhine in accordance with the General Data Protection Regulation GDPR of the European Union), the Ethics Committee of the University of Cologne ruled that approval was not required for this retrospective analysis. Throughout the whole study, the declaration of Helsinki and applicable national regulations and laws were observed.