Found 1 pathways with zero (PubMed) references
* [http://classic.wikipathways.org/instance/WP504_r125345](http://classic.wikipathways.org/instance/WP504_r125345) 'Fatty acid biosynthesis' in Rattus norvegicus has zero references;
More details at https://www.wikipathways.org/WikiPathwaysCurator/ReferencesTests/atLeastOneReference