Name	Info	Provider	Link
	free resource	Medknow Publications and Media Pvt Ltd	http://www.clinicalimagingscience.org/article.asp?issn=2156-7514;year=2015;volume=5;issue=1;spage=18;epage=18;aulast=Mutai
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/25883858/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/25883858
	free resource	scite Smart Citations	https://scite.ai/reports/25883858