[1] Thomas Jefferson Univ, Dept Neurol, Jefferson Headache Ctr, Philadelphia, PA USA
[2] Teva Netherlands BV, Global Med Affairs, Amsterdam, Netherlands
[3] Teva Branded Pharmaceut Prod R&D Inc, Global Med Affiars, W Chester, PA USA
[4] US Med Affairs, Teva Pharmaceut, Parsippany, NJ USA