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APA Citation
Guo, Z., Fu, P., Yin, Y., Wang, F., Yin, Y., Wang, J., & Liu, Y. (n.d.). the characteristics of hepatitis B surface antigen (HBsAg)‐negative hepatitis B virus (HBV) infection in Chinese blood donors: a follow‐up study of donors tested negative for HBsAg and reactive for simultaneous nucleic acid testing of HBV, hepatitis C virus, and human immunodeficiency virus. Transfusion, 57(3), 832–840. http://access.bl.uk/ark:/81055/vdc_100044698680.0x000034