Found 1 pathways with zero (PubMed) references
* [http://classic.wikipathways.org/instance/WP437_r126309](http://classic.wikipathways.org/instance/WP437_r126309) 'EGF/EGFR signaling pathway' in Homo sapiens has zero references;
More details at https://www.wikipathways.org/WikiPathwaysCurator/ReferencesTests/atLeastOneReference