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APA Citation
Sun, M., Li, C., Dan Wu, , Li, P., Lu, J., Wang, Y., Chang, F., Li, X., & Hao, M. (n.d.). impact evaluation of the routine hepatitis B vaccination program of infants in China. Journal of public health, 41, 158–163. http://access.bl.uk/ark:/81055/vdc_100094060739.0x000010