Methods: The study was a cross-sectional study that used data from premature infants who were born less than 34 weeks of gestational age and were admitted to the neonatal intensive care unit.
Phương pháp: Mô tả cắt ngang thực hiện trên 74 trẻ sanh non nhỏ hơn 34 tuần, bệnh màng trong được bơm surfactant.