参考文献
Älgå A, Eriksson O, Nordberg M. Analysis of Scientific Publications During the Early Phase of the COVID-19 Pandemic: Topic Modeling Study[J]. Journal of Medical Internet Research, 2020, 22(11): e21559.
引用
Karolinska Institutet. "Survey of COVID-19 research provides fresh overview." ScienceDaily. ScienceDaily, 10 November 2020. <www.sciencedaily.com/releases/2020/11/201110151144.htm>.
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