1 (Zenchent Fe 1)
This is a list of studies conducted on the risk of breast cancer associated with combined oral contraceptive use. The text provides the name of the studies, their respective dates, and whether they focus on current or ever use of contraceptives. The studies include: NICHO Women's Contraceptive Study in 2002, French E3N cohort Study in 2005, Shanga Women's Health study in 2009, The Nurses' Health Study in 2010, and the Xtord Family Planning Association Study in 2013. The Danish Sex Hormone Register Study of 2017 is also mentioned. The text ends with a table with Effect Estimates (OR/RR).*