perinatal stage的用法和样例：
例句
- These antibodies may result in serious bleeding, including intracranial hemorrhage in the perinatal period.
这些抗体可能会导致严重的出血，包括围生期颅内出血等。 - Congenital megaurethra has a very poor perinatal outcome.
先天性巨尿道的围产期预后非常差。 - Can the perinatal scheduled time cardiac muscle disease recrudesce?
围产期心肌病会不会复发啊？
