WHO's List of Essential Medicines
P Tfelt‐Hansen (lead),
Danish Headache Centre, Glostrup Hospital, Glostrup, Denmark
TJ Steiner, Norwegian University of Science and Technology, Trondheim, Norway, and Imperial College London, London, UK
P Tfelt‐Hansen (lead),
Danish Headache Centre, Glostrup Hospital, Glostrup, Denmark
TJ Steiner, Norwegian University of Science and Technology, Trondheim, Norway, and Imperial College London, London, UK