PMC:7243778 / 1435-1512 JSONTXT

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{"target":"http://pubannotation.org/docs/sourcedb/PMC/sourceid/7243778","sourcedb":"PMC","sourceid":"7243778","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7243778","text":", natural or artificial, can fight the diseases.\nSeveral pandemics have occur","tracks":[]}