Funding for this research was provided by:
Received: 1 November 2021
Accepted: 11 March 2022
First Online: 9 April 2022
: All methods performed in this study are in accordance with the ethical standards of the 1964 Declaration of Helsinki. The ethics committee of the Faculty of Medicine of Leipzig University and of the State Chamber of Physicians of Saxony approved the study (references: 231/13-ff and EK-allg-26/14–1). Written informed consent was obtained from the residents themselves or from their legal representatives in case of cognitive impairment. The respective general practitioners also gave their written consent to study participation.
: Not applicable.
: The authors declare that they have no competing interests.