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HARVARD Citation
Liang, C. et al. (2022). Effectiveness of influenza vaccination in the elderly: a population-based case-crossover study. BMJ open. 12 (2), p. . [Online].
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Liang, C. et al. (2022). Effectiveness of influenza vaccination in the elderly: a population-based case-crossover study. BMJ open. 12 (2), p. . [Online].