Article History
Received: 21 February 2022
Accepted: 27 June 2022
First Online: 6 July 2022
Declarations
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: Not applicable.
: Not applicable.
: FP, NCM and LB declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. PW declares personal honoraria from Elsevier Ltd. as Systematic Reviews Editor for Environment International, the journal in which the WHO/ILO systematic reviews of prevalence of occupational exposures were published and for which he was handling editor.