Changes in the Incidence of Congenital Anomalies in Henan Province, China, from 1997 to 2011

Abstract

The incidence of congenital anomalies has decreased in Henan Province over the past 15 years due to significant reductions in rural areas and among girls. This decrease was partly related to a reduction in neural tube defects that was likely the result of a folic acid intervention in the province.