Funding for this research was provided by:
Received: 7 January 2020
Accepted: 7 January 2021
First Online: 3 February 2021
Ethics approval and consent to participate
: The study was approved and overseen by an Independent Review Board in the United States (approval code: ADE1-17-249). Written informed consent was obtained prior to the collection of any data.
: Not applicable.
: SG, DC and SF are employees of, and hold stocks/share options in GSK. JP was an employee of GSK at the time of the study. PB was an employee of GSK at the time of the study and holds stocks/share options in GSK and Janssen. CP, JRW and RA are employees of Adelphi Values, a health outcomes research agency commissioned by GSK to conduct the research described in this manuscript.