Found 1 pathways with zero (PubMed) references
* [http://classic.wikipathways.org/instance/WP88_r116521](http://classic.wikipathways.org/instance/WP88_r116521) 'Toll-like receptor signaling' in Mus musculus has zero references;
More details at https://www.wikipathways.org/WikiPathwaysCurator/ReferencesTests/atLeastOneReference