Table 3.

Contents of the struct of ‘metadata’.

Struct	Data Entry	Data Key	Data Type
Metadata
	Title	title	string
	Authors	author	string array
	Source of the publication	source	string
	Year of publication	year	numeric
	Institution	institution	string array
	Country and region	country_region	string array
	Funding agency	fund	string array
	DOI	doi	string