A.母孕期應(yīng)多曬太陽 B.母孕期末3個(gè)月應(yīng)補(bǔ)充維生素D C.堅(jiān)持母乳喂養(yǎng) D.嬰兒在生后2個(gè)月起補(bǔ)充維生素D E.按時(shí)添加輔食