Low-dose oral contraceptives are safer than high-dose pills.
Lidegaard
O
O
D002545:Brain Ischemia / Q000139:chemically induced; D003276:Contraceptives, Oral / Q000008:administration & dosage* / Q000009:adverse effects*; D003718:Denmark; D005260:Female; D006801:Humans
D003276:Contraceptives, Oral