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{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7499623","sourcedb":"PMC","sourceid":"7499623","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7499623","text":"cases per hospital varied from fewer than 20 cases (30.6%) to more than 200 cases (22.7%) per hospi","tracks":[]}