@book{UBHD-69121223,
  author={Burchardt, Norah Ana},
  organization={Universit{\"a}t Heidelberg},
  title={Hormones and cancer risk: oral contraceptive use and cancers of the endometrium and breast, and serum sex steroids and breast cancer risk in postmenopausal hormone therapy users},
  address={Heidelberg},
  year={2021},
  pages={xviii, 187 Seiten},
  language={eng},
  school={Dissertation,  Ruprecht-Karls-Universit{\"a}t Heidelberg,  2023},
  library={UB [Signatur: 2023 U 785]},
}
@article{UBHD-69161248,
  author={Burchardt, Norah Ana and Shafrir, Amy L. and Kaaks, Rudolf and Tworoger, Shelley S. and Turzanski Fortner, Renée},
  title={Oral contraceptive use by formulation and endometrial cancer risk among women born in 1947-1964},
  subtitle={the Nurses’ Health Study II, a prospective cohort study},
  year={2021},
  pages={827-839},
  language={eng},
  issn={1573-7284},
  volume={36},
  number={8},
  note={Published online: 17 December 2020 ; Gesehen am 15.01.2024},
  journal={European journal of epidemiology},
  doi={10.1007/s10654-020-00705-5},
}
@article{UBHD-69050850,
  author={Burchardt, Norah Ana and Eliassen, A. Heather and Shafrir, Amy L. and Rosner, Bernard and Tamimi, Rulla M. and Kaaks, Rudolf and Tworoger, Shelley S. and Fortner, Renée T.},
  title={Oral contraceptive use by formulation and breast cancer risk by subtype in the Nurses' Health Study II},
  subtitle={a prospective cohort study},
  year={2022},
  pages={821.e1-821.e26},
  language={eng},
  issn={1097-6868},
  volume={226},
  number={6 vom: Juni},
  note={Online verf{\"u}gbar 15 December 2021, Version des Artikels 7 June 2022 ; Gesehen am 13.03.2023},
  journal={American journal of obstetrics and gynecology},
  doi={10.1016/j.ajog.2021.12.022},
}