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无锡地区早期妊娠妇女血液叶酸浓度季节变化趋势及影响因素
任爱国;章斐然;张乐;童玉瑛;李智文;王建英;郝玲;李竹
Blood folate concentrations, seasonal variations and associated factors among women in their first trimester of pregnancy in Wuxi, China
中国生育健康杂志 . 2006, (2): 71 -75 .