Funding for this research was provided by:
Pfizer Inc (n/a)
Received: 21 November 2019
Accepted: 18 May 2020
First Online: 18 June 2020
Ethics approval and consent to participate
: This study was conducted in accordance with the International Council for Harmonisation Guidelines for Good Clinical Practice and the Declaration of Helsinki. The study protocol and subsequent amendments were reviewed and approved by local institutional review boards/independent ethics committees. All subjects or their parents or legal representatives provided written informed consent. For subjects aged < 18 years, written informed consent was obtained from the subjects and their parents or legal guardians; subjects aged ≥18 years or reaching 18 years old after enrollment provided written informed consent directly.
: Not applicable.
: CB-T’s institution received grants from the GSK group of companies. PP, CW, MC, PL, and JP are employees of Pfizer. MVW, BC, NS, EA, and VB are employees of GlaxoSmithKline.