causes were hyaline membrane disease ( 168 = 27.2 % ) , massive lung bleeding ( 64 = 10.4 % ) , pneumonia ( 36 = 5.8 % ) , atelectases ( 29 = 4.7 % ) , and amniotic fluid aspiration ( 7 = 1.1 % ) .
C0024109
lung
C0032285
pneumonia