[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