Liu, M., Chen, J., Liu, J., Zhang, S., Wang, Q., Shen, H., & Zhang, Y. (2017). Socioeconomic inequality in periconceptional folic acid supplementation in China: A census of 0.9 million women in their first trimester of pregnancy. BMC Pregnancy Childbirth.

Liu, Min, Jing Chen, Jue Liu, Shikun Zhang, Qiaomei Wang, Haiping Shen, و Yiping Zhang. "Socioeconomic Inequality in Periconceptional Folic Acid Supplementation in China: A Census of 0.9 Million Women in Their First Trimester of Pregnancy." BMC Pregnancy Childbirth 2017.

Liu, Min, et al. "Socioeconomic Inequality in Periconceptional Folic Acid Supplementation in China: A Census of 0.9 Million Women in Their First Trimester of Pregnancy." BMC Pregnancy Childbirth 2017.