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Authors
Salm, Sandra
Cecon, Natalia
Jenniches, Imke
Pfaff, Holger
Scholten, Nadine
Dresen, Antje
Krieger, Theresia
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Funding
Funding for this research was provided by:
Universitätsklinikum Köln
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Article History
Received: 13 January 2022
Accepted: 13 April 2022
First Online: 22 April 2022
Declarations
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: The ethics committee of the Medical Faculty of the University of Cologne has approved the isPO project and its study design (No. 18–092). Written informed consent was obtained from the participants. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: Prof. Dr. Holger Pfaff is an Editorial Board Member of <i>BMC Health Services Research</i>. The remaining authors declare no conflicts of interest.
