Funding for this research was provided by:
Big Lottery Fund (10270530)
Received: 19 December 2018
Accepted: 26 June 2019
First Online: 31 July 2019
Ethics approval and consent to participate
: All authors of the manuscript have read and agreed to its content and are accountable for all aspects of the accuracy and integrity of the manuscript in accordance with ICMJE criteria.This article is original, has not already been published in a journal, and is not currently under consideration by another journal. Results from this model have previously been presented at the 2016 International Society for Pharmacoeconomics and Outcomes Research European conference and have since been updated for this manuscript.All authors agree to the terms of the BioMed Central Copyright and License Agreement.
: Not applicable.
: At the time of study, authors SE and SDS were affiliated with Costello Medical. SE is currently affiliated with the Acteon Consultancy LLP, and SDS is currently affiliated with the University of Warwick. The authors have nothing further to declare.