A.
孕早期服用叶酸 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
B.
孕早期接种风疹疫苗 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
C.
孕中期感冒 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
D.
孕早期宫内感染 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>