Schäfer, Willemijn L. A.
van den Berg, Michael J.
Groenewegen, Peter P. https://orcid.org/0000-0003-2127-8442
Funding for this research was provided by:
European Commission (grant agreement 242141)
Article History
Received: 17 July 2020
Accepted: 2 October 2020
First Online: 16 October 2020
Ethics approval and consent to participate
: Ethical approval for the QUALICOPC study was acquired in accordance with the legal requirements in each country [].
: Not applicable.
: The authors declare that they have no competing interests.