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Hapuarachchi HC, Wong WY, Koo C, Tien WP, Yeo G, Rajarethinam J, Tan E, Chiang S, Chong CS, Tan CH, Tan LK, Ng LC.Hapuarachchi HC, et al. Among authors: koo c.Int J Infect Dis. 2021 Sep;110:417-425. doi: 10.1016/j.ijid.2021.08.007. Epub 2021 Aug 8.Int J Infect Dis. 2021.PMID: 34380087Free article.
Koo C, Nasir A, Hapuarachchi HC, Lee KS, Hasan Z, Ng LC, Khan E.Koo C, et al.Virol J. 2013 Sep 4;10:275. doi: 10.1186/1743-422X-10-275.Virol J. 2013.PMID: 24007412Free PMC article.
Hapuarachchi HC, Koo C, Kek R, Xu H, Lai YL, Liu L, Kok SY, Shi Y, Chuen RL, Lee KS, Maurer-Stroh S, Ng LC.Hapuarachchi HC, et al. Among authors: koo c.Sci Rep. 2016 Mar 4;6:22592. doi: 10.1038/srep22592.Sci Rep. 2016.PMID: 26940650Free PMC article.