Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31245158/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/31245158
	free resource	The Korean Gastric Cancer Association	https://www.jgc-online.org/DOIx.php?id=10.5230/jgc.2019.19.e18