Primary stabbing headache: Clinical characteristics and response to treatment in a series of 67 patients

1. Pedraza, M.I.
2. Guerrero-Peral, Á.L.
3. Herrero-Velázquez, S.
4. Mulero, P.
5. Barón, J.
6. Ruiz, M.
7. Marco-Llorente, J.
8. Fernández-Buey, M.N.