Found 1 pathways with zero (PubMed) references
* [http://classic.wikipathways.org/instance/WP562_r116864](http://classic.wikipathways.org/instance/WP562_r116864) 'Exercise-induced circadian regulation' in Danio rerio has zero references;
More details at https://www.wikipathways.org/WikiPathwaysCurator/ReferencesTests/atLeastOneReference