Table 1.

Query used for the retrospective exposure assessment (REA) in general. N: number of papers results from the search. Date of search: 18 May 2020.

General Retrospective Assessment
Database	Search Query	n
Scopus	(TITLE-ABS-KEY(“exposure assessment” OR “occupational exposure” OR “risk assessment” OR “exposure estimation”) AND TITLE-ABS-KEY(“exposure reconstruction” OR “past exposure” OR “historical exposure” OR “retrospective exposure assessment”))	857
Web of Science	TS = (“exposure assessment” OR “occupational exposure” OR “risk assessment” OR “exposure estimation”) AND TS = (“exposure reconstruction” OR “past exposure” OR “historical exposure” OR “retrospective exposure assessment”)	361
Pubmed *	(((((exposure assessment) OR occupational exposure) OR risk assessment) OR exposure estimation)) AND ((((exposure reconstruction) OR past exposure) OR historical exposure) OR retrospective exposure assessment)	11,800

* Due to the high number of articles obtained using this search query in Pubmed, it was decided not to consider this database for this part of the review.