@book{8604,
	author = {World Health Organization. Advisory Committee on Variola Virus Research. Meeting (4th: 2002: Geneva, Switzerland). and World Health Organization. Global Alert and Response Team},
	title = {WHO Advisory Committee on Variola Virus Research : report of the fourth meeting, Geneva, Switzerland, 20-21 November 2002.},
	publisher = {World Health Organization,},
	year = {2003.},
	address = {Geneva : }
}