Mortality and morbidity in extremely preterm infants (22 to 26 weeks of gestation): Austria 1999-2001.

Objective: The aim of this retrospective study was to analyze the mortality and morbidity for extremely preterm infants with a gestational age from 22 to 26 weeks. All infants were born in Austria during the years 1999-2001.

Methods: Data were collected from 16 neonatal intensive care units in Austria.