Long-term neurodevelopmental outcomes in extremely preterm infants born at 22-26 weeks gestation: a follow-up of 2-2.5 years across two Swedish national cohorts from 2004-2007 to 2014-2016.

Ulrika Ådén, Aijaz Farooqi, Lena Hellstrom-Westas, Karin Sävman, Thomas Abrahamsson, Lars J Björklund, Magnus Domellöf, Anders Elfvin, Fredrik Ingemansson, Fredrik Serenius, Stellan Hakansson, David Ley, Erik Normann, Petra Um Bergström, Karin Kallen