Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21747613/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/21747613
	free resource	Korean Dermatological Association	https://anndermatol.org/DOIx.php?id=10.5021/ad.2011.23.2.156