@article {l,
	title = {Lack of person-to-person transmission of enterotoxigenic Escherichia coli despite close contact},
	journal = {American Journal of Epidemiology},
	volume = {111},
	number = {3},
	year = {1980},
	pages = {347-355},
	url = {http://aje.oxfordjournals.org/content/111/3/347.full.pdf+html},
	author = {Levine, M. M. and others}
}
