Name	Info	Provider	Link
	free resource	J-STAGE, Japan Science and Technology Information Aggregator, Electronic	https://dx.doi.org/10.3960/jslrt.21004
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34193755/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/34193755
	subscription/membership/fee required	Medical Online, Meteo Inc	https://www.medicalonline.jp/meteo_linkout.php?issn=1346-4280&volume=61&issue=3&spage=162