@article{cb3efd9e72914c95af9e482c25d393a6,
title = "The contraceptive revolution: some excellent progress but work still to be done",
keywords = "practitioners oral-contraception, collaborative reanalysis, hormonal contraception , individual data, ovarian-cancer, royal-college, women, cohort, risk, mortality",
author = "Philip Hannaford and Toni Belfield",
year = "2009",
month = jan,
day = "1",
doi = "10.3399/bjgp09X394789",
language = "English",
volume = "59",
pages = "4--6",
journal = "The British Journal of General Practice",
issn = "0960-1643",
publisher = "Royal College of General Practitioners",
number = "558",
}