Table 1 Literature search strategy

#1

Corrupt*.ti,ab. OR anticorrupt*.ti,ab. OR anti-corrupt*.ti,ab. OR fraud*.ti,ab. OR falsifi*.ti,ab. OR embezzl*ti,ab. OR bribe*.ti,ab. OR integrity.ti,ab. OR transparen*.ti,ab. OR accountability.ti,ab. OR substandard.ti,ab. OR conflict*.ti,ab. OR illicit enrichment.ti,ab. OR conceal*.ti,ab. OR exploit*.ti,ab. OR abus*.ti,ab. OR informal pay*.ti,ab. OR kickback*.ti,ab. OR collusion*.ti,ab. OR pay off*.ti,ab. OR conflict interest.ti,ab. OR *Fraud/ OR *substandard drug/ OR *”Conflict of Interest”/

#2

Covid*.ti,ab. OR corona*.ti,ab. OR SARS-COV-2.ti,ab. OR *COVID-19/ OR

*COVID-19 Testing/ OR *COVID-19 Vaccines/ OR SARS-COV-2/

#3

Drug industry.ti,ab. OR pharmaceutical industry.ti,ab. OR health*.ti,ab. OR health system*.ti,ab. OR pharm*.ti,ab. OR medicine*.ti,ab. OR health policy.ti,ab. OR

*Drug Industry/ OR *Health Care Sector/ OR *Health Policy/

#4

#1 AND #2 AND #3