PMC:7534795 / 9729-9830 JSONTXT

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    2_test

    {"project":"2_test","denotations":[{"id":"33031856-32031570-84038822","span":{"begin":34,"end":38},"obj":"32031570"}],"text":"ospitalization (Wang, Hu, et al., 2020). Moreover, the National Health Commission of China reported t"}