Funding for this research was provided by:
Received: 22 April 2019
Accepted: 22 December 2019
First Online: 30 December 2019
Ethics approval and consent to participate
: Ethical approval was obtained from the VU University Medical Center Amsterdam on 3rd August 2017 under the corresponding number: 2017.292. Written informed consent was and will be obtained from all participants. The Medical Ethics Review Committee of VU University Medical Center is registered with the US Office for Human Research Protections (OHRP) as IRB00002991. The FWA number assigned to VU University Medical Center is FWA00017598.
: Not applicable.
: This study has received funding from GlaxoSmithKline Biologicals SA and has undergone peer review by the funding organization. All authors declare that they have no competing interests.