[Clinical experience of treatment with onabotulinumtoxin A in patients with refractory migraine].

1. Palma, J.A.
2. Irimia, P.
3. Fernandez-Torron, R.
4. Ortega-Cubero, S.
5. Riverol, M.
6. Luquin, M.R.
7. Martinez-Vila, E.