TY - STAND AU - C. Vasilakis-Scaramozza AU - H. Jick BT - Lancet DO - 10.1016/s0140-6736(01)06522-9 M1 - 9291 PY - 2001 SP - 1427 EP - 9 T2 - Lancet TI - Risk of venous thromboembolism with cyproterone or levonorgestrel contraceptives VL - 358 SN - 0140-6736 (Print) 0140-6736 ER -