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Investigation of three clusters of COVID-19 in Singapore: implications for surveillance and response measures.
Pung R, Chiew CJ, Young BE, Chin S, Chen MI, Clapham HE, Cook AR, Maurer-Stroh S, Toh MPHS, Poh C, Low M, Lum J, Koh VTJ, Mak TM, Cui L, Lin RVTP, Heng D, Leo YS, Lye DC, Lee VJM; Singapore 2019 Novel Coronavirus Outbreak Research Team. Pung R, et al. Lancet. 2020 Mar 28;395(10229):1039-1046. doi: 10.1016/S0140-6736(20)30528-6. Epub 2020 Mar 17. Lancet. 2020. PMID: 32192580 Free PMC article.
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