. Author manuscript; available in PMC: 2022 Feb 16.
Published in final edited form as: Vaccine. 2019 Jul 17;37 Suppl 1(Suppl 1):A28–A34. doi: 10.1016/j.vaccine.2019.05.035
This is an open access article under the CC BY IGO license. (https://creativecommons.org/licenses/by/3.0/igo/).