Found 1 pathways with zero (PubMed) references
* [http://classic.wikipathways.org/instance/WP136_r128192](http://classic.wikipathways.org/instance/WP136_r128192) 'Phase I biotransformations, non-P450' in Homo sapiens has zero references;
More details at https://www.wikipathways.org/WikiPathwaysCurator/ReferencesTests/atLeastOneReference