title: The Nordic Health Registries: an important part of modern medical research.
authors.affiliation: Norwegian National Advisory Unit on Women's Health, Oslo University Hospital, Rikshospitalet, Oslo, Norway martereigstad@gmail.com.
authors.forename: M M
authors.initials: MM
authors.lastname: Reigstad
authors.affiliation: Institute of Population-based Cancer Research, Cancer Registry of Norway, Oslo, Norway.
authors.forename: I K
authors.initials: IK
authors.lastname: Larsen
authors.affiliation: Institute of Population-based Cancer Research, Cancer Registry of Norway, Oslo, Norway.
authors.forename: T Å
authors.initials: TÅ
authors.lastname: Myklebust
authors.affiliation: Institute of Population-based Cancer Research, Cancer Registry of Norway, Oslo, Norway.
authors.forename: T E
authors.initials: TE
authors.lastname: Robsahm
authors.affiliation: Section of Reproductive Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway.
authors.forename: N B
authors.initials: NB
authors.lastname: Oldereid
authors.affiliation: Section of Reproductive Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway.
authors.forename: A K
authors.initials: AK
authors.lastname: Omland
authors.affiliation: Norwegian National Advisory Unit on Women's Health, Oslo University Hospital, Rikshospitalet, Oslo, Norway.
authors.forename: S
authors.initials: S
authors.lastname: Vangen
authors.affiliation: Norwegian National Advisory Unit on Women's Health, Oslo University Hospital, Rikshospitalet, Oslo, Norway.
authors.forename: R
authors.initials: R
authors.lastname: Storeng
mesh_terms: D005260:Female; D006801:Humans; D007246:Infertility / Q000628:therapy*; D009369:Neoplasms / Q000453:epidemiology* / Q000209:etiology*; D011247:Pregnancy; D027724:Reproductive Techniques, Assisted / Q000009:adverse effects*; D012306:Risk