Fig. 1
From: Outcomes of extremely preterm infants with bronchopulmonary dysplasia: a retrospective cohort study

Flow diagram of the study population. BPD, Bronchopulmonary dysplasia; PMA, post-menstrual age.
From: Outcomes of extremely preterm infants with bronchopulmonary dysplasia: a retrospective cohort study

Flow diagram of the study population. BPD, Bronchopulmonary dysplasia; PMA, post-menstrual age.