Institution: | 1. From the Jefferson Headache Center, Philadelphia, PA, USA (M.J. Marmura, M. Hopkins, J. Andrel, and W.B. Young);2. Ortho‐McNeil Janssen Scientific Affairs, LLC, Raritan, NJ, USA (D.M. Biondi, M.F.T. Rupnow, and R.B. Armstrong).;3. Current affiliation: Ethicon, Inc., Somerville, NJ, USA. |