@book{8292,
	author = {WHO},
	title = {Cardiovascular disease and steroid hormone contraception :},
	publisher = {World Health Organization},
	year = {1998},
	series = {WHO Technical report series,877},
	address = {Geneva },
	edition = {Nil},
	note = {Report of a WHO Scientific Group on Cardiovascular Disease and Steroid Hormone Contraception, which met in Geneva, 3-7 November 1997.}
}