In both studies, researchers interiewed mothers of more than 9,500 infants with birth defects, including cleft palate and heart ale problems.
In both studies, researchers interiewed mothers of more than 9,500 infants with birth defects, including cleft palate and heart ale problems.
在这两项研究中，研究人员调查了9500名出生缺陷婴儿的母亲，其中包括唇裂和心瓣膜问题。