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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1987 1
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Human infection with influenza H9N2.
Peiris M, Yuen KY, Leung CW, Chan KH, Ip PL, Lai RW, Orr WK, Shortridge KF. Peiris M, et al. Among authors: ip pl. Lancet. 1999 Sep 11;354(9182):916-7. doi: 10.1016/s0140-6736(99)03311-5. Lancet. 1999. PMID: 10489954
14 results