The Safety of Triptans in the Treatment of Patients with Migraine
Am J Med 112:135-140, Jamieson,D.G., 2002
Accelerated Intracranial Occlusive Disease, Oral Contraceptives, and Cigarette Use
Neurol 41:1893-1901, Levine,S.R.,et al, 1991
Oral Contraception & Increased Risk of Cerebral Ischemia or Thrombosis-Collaborative Group
NEJM 288:871, 906, 1973, Corr 289:219, 1973, 289:809., , 1973