TY - STAND AU - S. Jick AU - M. Myers AU - H. Jick BT - Lancet DO - 10.1016/s0140-6736(99)01014-4 M1 - 9175 PY - 1999 SP - 302 EP - 3 T2 - Lancet TI - Risk of idiopathic cerebral haemorrhage in women on oral contraceptives with differing progestagen components VL - 354 SN - 0140-6736 (Print) 0140-6736 ER -