Found 1 pathways with zero (PubMed) references
* [http://classic.wikipathways.org/instance/WP154_r116851](http://classic.wikipathways.org/instance/WP154_r116851) 'Biogenic amine synthesis' in Danio rerio has zero references;
More details at https://www.wikipathways.org/WikiPathwaysCurator/ReferencesTests/atLeastOneReference