Table 2 Search strings utilised across the different databases

PubMed

("resveratrol" OR "trans-resveratrol") AND ("oral cancer" OR "oral neoplasms" OR "OSCC")

Embase

('resveratrol'/exp OR 'resveratrol') AND ('oral cancer'/exp OR 'oral cancer' OR 'oral neoplasms' OR 'OSCC'/exp OR 'OSCC')

Scopus

(TITLE-ABS-KEY(resveratrol) AND TITLE-ABS-KEY(oral cancer OR oral neoplasms OR OSCC))

Web of Science

TS = ("resveratrol" AND "oral cancer" OR "oral neoplasms" OR "OSCC")

Cochrane

(resveratrol OR trans-resveratrol) AND (oral cancer OR oral neoplasms OR OSCC)

CINAHL

(resveratrol OR trans-resveratrol) AND (oral cancer OR oral neoplasms OR OSCC)

PsycINFO

(resveratrol OR trans-resveratrol) AND (oral cancer OR oral neoplasms OR OSCC)

Google Scholar

(allintitle: resveratrol OR allintitle: trans-resveratrol) AND (allintitle: "oral cancer" OR allintitle: "oral neoplasms" OR allintitle: "OSCC")