00516nas a2200181   4500000000100000000000100001008004100002100001900043700001700062700001500079700001600094700001400110700001400124245014700138300001100285490000600296022003200302       2000                            d1 aA. Nightingale1 aR. Lawrenson1 aE. Simpson1 aT. Williams1 aK. MacRae1 aR. Farmer00aThe effects of age, body mass index, smoking and general health on the risk of venous thromboembolism in users of combined oral contraceptives  a265-740 v5  a1362-5187 (Print) 1362-5187