Comment on

• Migraine and antiphospholipid antibodies.

  Tietjen GE. Tietjen GE. Cephalalgia. 1992 Apr;12(2):69-74. doi: 10.1046/j.1468-2982.1992.1202069.x. Cephalalgia. 1992. PMID: 1576646 Review.
• Sodium valproate in the prophylactic treatment of migraine: a double-blind study versus placebo.

  Hering R, Kuritzky A. Hering R, et al. Cephalalgia. 1992 Apr;12(2):81-4. doi: 10.1046/j.1468-2982.1992.1202081.x. Cephalalgia. 1992. PMID: 1576648 Clinical Trial.