[1
]
Research and Development Department, Teva Pharmaceuticals, Frazer, PA, USA. Electronic
address: marcelo.bigal@tevapharm.com.
[2
]
Department of Neurology, Mayo Clinic, Phoenix, AZ, USA.
[3
]
The David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
[4
]
Department of Neurology, Jefferson Headache Center, Thomas Jefferson University, Philadelphia,
PA, USA.
[5
]
Statistics Department, Teva Pharmaceuticals, Frazer, PA, USA.
[6
]
Research and Scientific Affairs Department, Teva Pharmaceuticals, Frazer, PA, USA.
[7
]
Department of Anesthesia and Critical Care, Beth Israel Deaconess Medical Center,
Harvard Medical School, Boston, MA, USA.
[8
]
Headache Institute and St Luke's-Roosevelt Hospital Center, New York, NY, USA.
[9
]
Department of Neurology, Albert Einstein College of Medicine, New York, NY, USA.