@book{31105,
	author = {Siziya, Seter},
	title = {Comparison of protection afforded by single Measles vaccination and late revaccination schedules},
	publisher = {University of Zambia, School of Medicine},
	year = {1997},
	series = {East Africa Medical Journal. Vol.74.No.12},
	address = {Lusaka:},
	note = {Bibliography}
}