Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/17570972/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/17570972
	free resource	M2PI	https://www.parahostdis.org/journal/view.php?doi=10.3347/kjp.2007.45.2.103