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Table 1 Research strategy and keywords used to retrieve documents in the field of human trafficking

From: Research trends on human trafficking: a bibliometric analysis using Scopus database

Search method

Keywords

Constraints

Exclusion

Title search

TITLE(“modern slavery” or “trade in human being” or “human trafficking” OR “trafficking in human” OR “lab*r trafficking” OR “forced lab*r” OR “compulsory lab*r” OR “sex* traffick*” OR “sex* trade*” OR “trafficking in persons” OR “traffick* person*” OR “traffick* wom*” OR “traffick* people” OR “traffick* girl*” OR “wom*n traffick*” OR “child* traffick*” OR “organ traffick*” OR “transplant tourism” OR “trafficking in wom*” OR “traffick* in organ*” OR “forced prostit*” OR “trafficking of child*” OR “trafficking of wom*” OR “sex* slavery” OR “commercial sexual exploitation” OR “lab*r traffick*” OR “organ trade” OR “forced marriage” OR “bonded lab*r” OR “child harvesting” OR “modern slavery” OR “child prostitut*” or “forced prostitut*” or “domestic servitude” or “debt bondage” or “debt slavery” or “bonded lab*r” or “child pornography”)

NONE

AND NOT TITLE-ABSTRACT (insect or droso* OR sexta OR cell OR molecular OR biology OR leukocyte* OR DNA)

OR

 Title search

TITLE (“tissue removal” OR “ova removal” OR slave* OR slavery OR servitude OR “child lab*r” OR “cross border traffick*” OR “child soldier*” OR anti-trafficking OR “human abduction”)

AND ALL (“human trafficking” OR “trafficking in human” OR “forced lab*r” OR “forced sex*” OR “forced prostitution” OR kidnap* or abduct* OR “child sex* or exploitation”)

AND NOT TITLE-ABSTRACT (insect or droso* OR sexta OR cell OR molecular OR biology OR leukocyte* OR DNA)

OR

 Title-Abstract search

TITLE-ABSTRACT (traffick*) AND TITLE-ABSTRACT (“in human” OR “human being*”)

AND ALL (“human trafficking” OR “trafficking in human*”)

AND NOT TITLE-ABS-KEY (phallus OR pgd OR cell OR molecule OR gene OR *cytes OR dna OR nucle* OR droso* OR sexta OR memberane OR “trade-off*” or insect)

AND NOT SRCTITLE (insect OR physiology OR biology OR biochemistry OR cellular OR evolution*)

AND

 Limit

1. Source type = journal

2. Time interval = 2000–2017