Search	(Glioblastoma) AND (Hypoxia-Inducible Factors)
Base: MEDLINE (PubMed)
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Search query	(“glioblastoma”[MeSH Terms] OR “glioblastoma”[All Fields] OR “glioblastomas”[All Fields]) AND ((“hypoxia”[MeSH Terms] OR “hypoxia”[All Fields] OR “hypoxia s”[All Fields] OR “hypoxias”[All Fields]) AND (“induce”[All Fields] OR “induced”[All Fields] OR “inducer”[All Fields] OR “inducers”[All Fields] OR “induces”[All Fields] OR “inducibilities”[All Fields] OR “inducibility”[All Fields] OR “inducible”[All Fields] OR “inducing”[All Fields]) AND (“factor”[All Fields] OR “factor s”[All Fields] OR “factors”[All Fields]))
Results	558 papers
Base: Web of Science
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Search query	TS = (“glioblastoma” OR “glioblastomas”) AND TS = (“hypoxia inducible factors” OR “hypoxia-inducible factors” OR “HIFs”)
Results	89 papers
Base: Scopus
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Search query	TITLE-ABS-KEY(“glioblastoma”) AND TITLE-ABS-KEY(“hypoxia inducible factors” OR “HIFs”)
Results	671 papers