TY - STAND AU - C. Black AU - J. Kaye AU - H. Jick BT - Br J Clin Pharmacol M1 - 6 PY - 2002 SP - 637 EP - 40 T2 - Br J Clin Pharmacol TI - Clinical risk factors for venous thromboembolus in users of the combined oral contraceptive pill VL - 53 SN - 0306-5251 (Print) 0306-5251 ER -