Funding for this research was provided by:
Friedrich-Ebert-Stiftung
Universität zu Lübeck
Article History
Accepted: 24 August 2022
First Online: 8 September 2022
Declarations
:
: Not applicable.
: As no patients were included in this present study, no informed consent was necessary. All studies included in this review stated that informed consent was obtained. Thus, the standards of good scientific practice were met.
: Not applicable.
: The authors declare no competing interests. There are no amendments between protocol and review (PROSPERO 2019 CRD42019134463) available from ExternalRef removed.