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. 2021 Feb 8;35:106848. doi: 10.1016/j.dib.2021.106848
Ultimate source type Ultimate verification source Ultimate source reliability Orig. source type Medium Original source
A = Official
B = Database
C = Primary
D = Secondary
E = Seller
E.g., photo, video, official records, site visit A = always
B = mostly
C = fairly
D = sometimes
E = unreliable
F = unknown
A = Original research
B = Official
C = Open source
D = Direct Report
e.g. Email, phone, report, database Name or identifier