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. 2020 Jul 29;89(6):1541–1548. doi: 10.1038/s41390-020-1092-2

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© The Author(s) 2020, corrected publication 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — The flow chart shows the total number of children born in Norway between 1996 and 2012 (abstracted from the Medical Birth registry of Norway) and among these the study population after exclusion of children born before gestational age (GA) 23 weeks or later than GA week 43, and stillbirths. The number of children with invasive group B streptococcus (GBS) infection during the first year of life is also shown (abstracted from the Norwegian Surveillance System for Communicable Diseases).