passages.id: 54
passages.type: sentence
passages.text: Women who smoke and take oral contraceptives ( OCs ) have significantly increased risk of cardiovascular disease , but the exact mechanismsfor the increased risk are not known .
entities.id: 55
entities.type: intervention
entities.text: oral contraceptives ( OCs )
entities.id: 56
entities.type: outcome
entities.text: cardiovascular disease