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. 2020 Nov 6;106(3):251–257. doi: 10.1136/archdischild-2020-318978

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© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Survival in all live born infants (A) and NICU-admitted infants (B) born with a gestational age between 24⁺⁰ and 26⁺⁶ weeks between 2007 and 2009 (reference period) and 2011–2017 (study period). Bars reflect 95% CIs. The year 2010 is not presented, as this was the year of implementation of the guideline and was therefore considered as a transition period. NICU, neonatal intensive care unit.