Funding for this research was provided by:
Received: 18 October 2019
Accepted: 12 June 2020
First Online: 29 July 2020
Ethics approval and consent to participate
: Human subjects research approval for this project was provided by an independent, scientific review committee (The Copernicus Group, Cary, NC, USA). All participants provided informed consent before enrolling in the study.
: Not applicable.
: SDM is an employee of, and HHC is a consultant to Health Outcomes Solutions, which received funding from GSK to undertake this study. SIB and VS are former employees of and hold stock in GSK. KLJ has received consulting fees from GSK for Steering Committee participation. TO is an employee of and holds stock in GSK.