The Efficacy, Safety, and Recurrence Rate of Diphenylcyclopropenone Topical Immunotherapy for Alopecia Areata: A Systemic Review and Meta-Analysis

Table 1

Search strategy (English version).

Databases	Search strategy
PubMed	(“Alopecia areata” or “alopecia circumscripta” or “totalis” or “universalis”) and (“topical immunotherapy” or “diphenylcyclopropenone” or “diphencyprone” or “DPCP” or “DPCP”)
Embase	(“Alopecia areata” or “alopecia circumscripta” or “totalis” or “universalis” or “alopecia universalis” or “alopecia totalis”) and (“topical immunotherapy” or “diphenylcyclopropenone” or “diphencyprone” or “dpcp” or “dcp”)
Cochrane Library	(“Alopecia areata” or “alopecia areata fere totalis” or “alopecia areata totalis”) and (“topical immunotherapy” or “diphenylcyclopropenone” or “diphencyprone”)
WanFang Data	(Topical immunotherapy) or (diphenylcyclopropenone) or (DPCP) and (alopecia areata) or (alopecia totalis) or (alopecia universalis)
Sinomed	(Alopecia areata) or (alopecia totalis) or (alopecia universalis) and (topical immunotherapy) or (diphenylcyclopropenone) or (DPCP)
Chinese Medical Journal Network	(Alopecia areata or alopecia totalis or alopecia universalis) and (topical immunotherapy or diphenylcyclopropenone or DPCP)