PubMed inner references obtained from five freely available bibliographic data sources

This dataset contains PMID-to-PMID citations of PubMed 2020 Baseline extracted from five freely available bibliographic data sources (COCI, Dimensions, MAG, NIH-OCC, and S2ORC). Each line contains one citing PubMed document and its cited references. The citing and cited documents are separated by a tab (\t) and the cited references are separated by a semicolon (;).