Found 1 pathways with zero (PubMed) references
* [http://classic.wikipathways.org/instance/WP4558_r107928](http://classic.wikipathways.org/instance/WP4558_r107928) 'Overview of interferons-mediated signaling pathway' in Homo sapiens has zero references;
More details at https://www.wikipathways.org/WikiPathwaysCurator/ReferencesTests/atLeastOneReference