Funding for this research was provided by:
National Institute for Health Research (CLAHRC)
Received: 9 September 2019
Accepted: 17 February 2020
First Online: 31 March 2020
Ethics approval and consent to participate
: This is a co-produced article and everyone involved in informing the evaluation and the article are co-authors, either as named members of the author team or as members of one of the three involvement groups. For this reason we did not seek ethical approval for doing the work, since we did not collect data but operated as a collaboration to inform understanding of how involvement principles are implemented in our groups. The evaluation workshops and meetings were conducted under Chatham House Rules.
: Not applicable.
: The authors declare that they have no competing interests.