[1] Teva Branded Pharmaceut Prod R&D Inc, W Chester, PA USA
[2] Albert Einstein Coll Med, Dept Neurol Psychiat & Behav Sci, New York, NY USA
[3] IRCCS San Raffaele Roma, Headache & Pain Unit, Rome, Italy
[4] San Raffaele Univ, Rome, Italy
[5] Teva Pharmaceut Ind Ltd, Petah Tiqwa, Israel
[6] TEVA PHARMA, Prod Farmaceut Lda, Porto Salvo, Portugal
[7] Thomas Jefferson Univ Hosp, Dept Neurol, Jefferson Headache Ctr, Philadelphia, PA 19107 USA
[8] Thomas Jefferson Univ Hosp, Dept Psychiat & Human Behav, Philadelphia, PA 19107 USA
[9] New England Inst Neurol & Headache, Stamford, CT USA
[10] Natl & Kapodistrian Univ Athens, Aeginit Hosp, Dept Neurol 1, Athens, Greece