1 Danish Headache Center and Department of Neurology, Rigshospitalet Glostrup, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark.
2 Danish Headache Center and Department of Neurology, Rigshospitalet Glostrup, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark. ashina@dadlnet.dk.
After publication of the original article 1, the authors have notified us that the row corresponding to the "Alniditan" drug shouldn't have been included in Table 1. Table 1 should therefore be presented as below.