Table 1. Final metadata object.

This is a tabular representation of the python dictionary used to store the metadata, the secondary column items are nested under the primary items where present. Metadata source key: Zr=Zoteroraw, S=Scopus, D=doi.org, P=PubMed, Ze=’Extra’ field from Zotero, W=Wikidata, De=Derived. The metadata sources are used in the order they are displayed in the table (left to right), once a value has been found the subsequent sources are not queried.

Primary	Secondary	Source
IDs	DOI	Zr
	PMID	Ze
	Scopus	S
	Hash	De
	Zotero	Zr
Authors	Author list	P/D
	First author	Author list/Ze
	Affiliation	D/P/S/Ze
Location	Canonical institute	De
	Town	W
	Country	W
	Longitude	W
	Latitude	W
Date		P/D/S/Ze/Zr
Title		P/D/S/Zr
Abstract		P
Citations	Scopus citation count	S
Keywords	MeSH	P
	Other	P
Journal	Name	D/P
	Volume	D/P
	Issue	D/P