Kari Furu, Ellen Barth Aares, Vidar Hjellvik, & Øystein Karlstad. (2021). Hormonal contraceptive use in Norway, 2006-2020, by contraceptive type, age and county: A nationwide register-based study. Norsk Forening for Epidemiologi.
Chicago Style (17th ed.) CitationKari Furu, Ellen Barth Aares, Vidar Hjellvik, and Øystein Karlstad. Hormonal Contraceptive Use in Norway, 2006-2020, by Contraceptive Type, Age and County: A Nationwide Register-based Study. Norsk Forening for Epidemiologi, 2021.
MLA (9th ed.) CitationKari Furu, et al. Hormonal Contraceptive Use in Norway, 2006-2020, by Contraceptive Type, Age and County: A Nationwide Register-based Study. Norsk Forening for Epidemiologi, 2021.
Warning: These citations may not always be 100% accurate.