00476nas a2200157 4500000000100000000000100001008004100002100001400043700001600057700001500073700001900088245016100107300001000268490000800278022003200286 2000 d1 aR. Farmer1 aT. Williams1 aE. Simpson1 aA. Nightingale00aEffect of 1995 pill scare on rates of venous thromboembolism among women taking combined oral contraceptives: analysis of general practice research database a477-90 v321 a0959-8138 (Print) 0959-8138