Headaches in the emergency department –a survey of patients’ characteristics, facts and needs oleh Alberto Doretti, Irina Shestaritc, Daniela Ungaro, John-Ih Lee, Loukas Lymperopoulos, Lili Kokoti, Martina Guglielmetti, Dimos Dimitrios Mitsikostas, Christian Lampl, on behalf of the School of Advanced Studies of the European Headache Federation (EHF-SAS)