Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/30140602/
	free resource	Georg Thieme Verlag Stuttgart, New York	https://www.thieme-connect.com/DOI/DOI?10.1055/s-0038-1667357
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/30140602
	free resource	scite Smart Citations	https://scite.ai/reports/30140602