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Zheng, Yang, Peng Yang, Shuangsheng Wu, Chunna Ma, Holly Seale, C Raina MacIntyre, and Quanyi Wang. A Cross-sectional Study of Factors Associated With Uptake of Vaccination against Influenza Among Older Residents in the Postpandemic Season in Beijing, China. BMJ Publishing Group, 2013.

Zheng, Yang, et al. A Cross-sectional Study of Factors Associated With Uptake of Vaccination against Influenza Among Older Residents in the Postpandemic Season in Beijing, China. BMJ Publishing Group, 2013.