@book{7192,
	author = {Edmunds, W.J....[et al.]. and Gay, N.J.},
	title = {The cost-effectivenss of Haemophilus influenzae Type b (Hib), hepatitis B virus (HBV) and measles vaccination in developing countries : a preliminary report to WHO, December 1999},
	publisher = {PHLS Communicable Disease Surveillance Centre,},
	year = {1999.},
	address = {London : }
}