Summary What is already known about this topic?Numerous studies conducted in China have reported on the prevalence of birth defects(BDs).However,the limited surveillance periods in select studies curtail comprehensive...Summary What is already known about this topic?Numerous studies conducted in China have reported on the prevalence of birth defects(BDs).However,the limited surveillance periods in select studies curtail comprehensive trends and cause evaluation.Accordingly,the surveillance duration of BDs is extended,and a comprehensive analysis of their prevailing trends is conducted to provide a basis for government intervention and policy implementation.展开更多
文摘Summary What is already known about this topic?Numerous studies conducted in China have reported on the prevalence of birth defects(BDs).However,the limited surveillance periods in select studies curtail comprehensive trends and cause evaluation.Accordingly,the surveillance duration of BDs is extended,and a comprehensive analysis of their prevailing trends is conducted to provide a basis for government intervention and policy implementation.
