Funding for this research was provided by:
Horizon 2020 Framework Programme (777394)
Gillings Fellowship (YOG054)
Received: 18 December 2018
Accepted: 11 November 2019
First Online: 9 December 2019
Ethics approval and consent to participate
: Due to all data being publicly available and already in force in the respective Member States, the outcomes of this study have no ethical implications. Also, since the study was completely based off of public data, there was no situation in which it was necessary to request consent.
: All authors have given their consent for the publication of this manuscript.
: The authors declare that they have no competing interests.