@misc{10286,
  author = {C. Vasilakis-Scaramozza and H. Jick},
  title = {Risk of venous thromboembolism with cyproterone or levonorgestrel contraceptives},
  year = {2001},
  journal = {Lancet},
  volume = {358},
  number = {9291},
  pages = {1427-9},
  issn = {0140-6736 (Print) 0140-6736},
  doi = {10.1016/s0140-6736(01)06522-9},
}