Database for Burden-of-headache Studies
M Linde, Norwegian University of Science and Technology (NTNU), and St Olavs Hospital, Trondheim, Norway
TJ Steiner, Norwegian University of Science and Technology (NTNU), Trondheim, Norway, and Imperial College London, London, UK
LJ Stovner, Norwegian University of Science and Technology (NTNU), and St Olavs Hospital, Trondheim, Norway
H Thomas, Norwegian University of Science and Technology (NTNU), Trondheim, Norway