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PMC:7212965 / 14159-14225
Annnotations
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T91","span":{"begin":3,"end":5},"obj":"http://purl.obolibrary.org/obo/CLO_0050510"}],"text":" , 18 The I 2 statistic was used to measure heterogeneity.19 To ex"}
2_test
{"project":"2_test","denotations":[{"id":"32407808-12958120-43469244","span":{"begin":58,"end":60},"obj":"12958120"}],"text":" , 18 The I 2 statistic was used to measure heterogeneity.19 To ex"}