

@article {11968,
	title = {Studies of echovirus-12 in volunteers: determination of minimal infectious dose and the effect of previous infection on infectious dose},
	journal = {J Infect Dis},
	volume = {150},
	number = {6},
	year = {1984},
	pages = {858-66},
	type = {Journal Article},
	issn = {0022-1899 (Print) 0022-1899},
	author = {Schiff, G. M. and Stefanovic, G. M. and Young, E. C. and Sander, D. S. and Pennekamp, J. K. and Ward, R. L.}
}
