@book{8523,
	author = {Breslow, Norman E and Day, N. E.},
	title = {Statistical Methods in Cancer Research : The Design and Analysis of Cohort Studies (Volume II)},
	publisher = {International Agency for Research on Cancer },
	year = {1987},
	series = {Statistical methods in cancer research },
	address = {Lyon },
	edition = {Nil},
	note = {At head of title: World Health Organization.}
}