Explain to expectant parents that this study has found small intracranial hemorrhages in about one in four infants delivered vaginally, compared with none among babies delivered by Caesarian section.

• 给期待中的双亲声明一下，该研究发现经产道出生的婴儿中四分之一合并小的颅内出血，与之相比，剖腹产无一例并发颅内出血。