Declaration of interest
I Firth was previously employed by the Office of Health Economics, a registered charity and Independent Research Organization, which receives funding from a variety of sources, including the Association of the British Pharmaceutical Industry (ABPI). J Hitch, N Henderson and G Cookson are currently employed by the Office of Health Economics, a registered charity and Independent Research Organization, which receives funding from a variety of sources, including the Association of the British Pharmaceutical Industry (ABPI). The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.
Reviewer disclosures
One peer reviewer declares that they are a Visiting Senior Fellow at the Office of Health Economics. Peer reviewers on this manuscript have no other relevant financial relationships or otherwise to disclose.