title: Systematic review: Mammography reduces breast cancer mortality in women aged 39-69 years; but harms may outweigh benefits in women under 50.
authors.affiliation: The Nordic Cochrane Centre, Rigshospitalet, Department 3343, Blegdamsvej 9, 2100 Copenhagen, Denmark. kj@cochrane.dk
authors.forename: Karsten Juhl
authors.initials: KJ
authors.lastname: Jørgensen