[PG] article no. or first page no.
[PT] article type
[AU] authors' names
[AD] affiliation (authors' addresses)
[TIAB] citation + abstract
[DISC] discussion/
conclusion section of text
[DOI] DOI
[FIG] figure legends
[INTR] introduction section of text
[IP] issue
[TA] journal title or abbreviation or ISSN
[METH] methods section of text
[RES] results section of text
[REF] references
[BDY] text (excluding citation and abstract)
[TI] title
[TW] title + abstract + text (excluding references)
[VI] volume
[DP] year of publication