How and when to refer patients diagnosed with secondary headache and other craniofacial pain in the emergency department and primary care: Recommendations of the Spanish Society of Neurology's Headache Study Group A.B. Gago-Veiga; J. Díaz de Terán; N. González-García; C. González-Oria; V. González-Quintanilla; A. Minguez-Olaondo; S. Santos-Lasaosa; J. Viguera Romero; P. Pozo-Rosich;

Position is important: retrograde air embolism after central venous catheter removal S. Balboa; R. Albillos; R. Yano; D. Escudero;

Dystonic head tremor secondary to neurocysticercosis I. Puig; M. Gea; F. Núñez; L. Ispierto; L. Grau-López; S. Roure; M. Lozano; G. Lucente; D. Vilas;