PMC:7212949 / 57321-57380 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7212949","sourcedb":"PMC","sourceid":"7212949","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7212949","text":"Mao et al (2020)N = 214, confirmed casesRetrospective study","tracks":[]}