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Shi P, Ren G, Yang J, Li Z, Deng S, Li M, Wang S, Xu X, Chen F, Li Y, Li C, Yang X, Xie Z, Wu Z, Chen M. Clinical characteristics of imported and second-generation coronavirus disease 2019 (COVID-19) cases in Shaanxi outside Wuhan, China: a multicentre retrospective study. Epidemiol Infect. 2020 Sep 30;148():e238. PMID: 32993821; PMCID: PMC7562779. |