@book{6818,
	author = {WHO Advisory Committee on Variola Virus Research Meeting (2nd : 1999 : Geneva). and World Health Organization. Epidemic Disease Control Team.},
	title = {WHO Advisory Committee on Variola Virus Research : report of the second meeting, Geneva, Switzerland, 15-16 February 2001},
	publisher = {World_Health_Organization,},
	year = {2001.},
	address = {Geneva : }
}