@article{RoemerBitzerEgarteretal.2021,
  author    = {Thomas R{\"o}mer and Johannes Bitzer and Christian Egarter and Peyman Hadji and Marion Kiechle and Heike Kramer and Patricia G. Oppelt and Klaus H. Peters and Petra Stute and Katrin Schaudig and Inka Wiegratz and Pedro-Antonio Regidor},
  title     = {Oral progestins in hormonal contraception: importance and future perspectives of a new progestin only-pill containing 4 mg drospirenone},
  journal   = {Geburtshilfe und Frauenheilkunde},
  volume    = {81},
  number    = {9},
  pages     = {1021 -- 1030},
  doi       = {10.1055/a-1471-4408},
  year      = {2021},
}