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Article History

Received: 31 July 2023

Accepted: 30 September 2023

First Online: 10 October 2023

Declarations

:

: The present study has been approved by the ethics committee of the Ludwig-Maximilians-University Munich (leading ethics committee, 20-004), and by the responsible ethics committee of every participating headache center. Informed consent was obtained from every subject before participation.

: Not applicable.

: RR has received travel grants and/or honoraria for lectures or advisory boards from Allergan/AbbVie, Hormosan, Lilly, Lundbeck, Novartis and Teva.GG has received honoraria from Lilly, Novartis Pharma, Teva, Lundbeck, and research grants from Novartis Pharma during the last 3 years. She does not hold any stocks of pharmaceutical companies.TD has received honoraria for consulting and lectures from Hormosan Pharma, Novartis Pharma, and TEVA.TF received honoraria for advisory boards from Novartis, Teva and Lundbeck and honoraria for lectures from Novartis, Teva, Lilly, Bayer and UCS.SF received honoraria from Allergan/AbbVie, Hormosan, Eli Lilly, Lundbeck, Novartis, Sanofi and Teva. She served on Advisory Boards for Hormosan, Eli Lilly, Lundbeck, Novartis, Sanofi and Teva.CG has received honoraria for consulting and lectures within the past 3 years from Abbvie, Lilly, Novartis Pharma, Hormosan Pharma, Grünenthal, Sanofi-Aventis, Lundbeck, Perfood, Reckitt and TEVA. His research is supported by a grant of the German Research Foundation (DFG). He does not hold any stocks of pharmaceutical companies. He is honorary secretary of the German Migraine and Headache Society.TK has received travel grants and/or honoraria from Allergan/AbbVie, Hormosan, Lilly, Novartis and Teva.LN received honoraria for lectures and advisory boards vrom Hormosan, Lilly, Novartis, Teva, AbbVie/Allergan.VR received the Soyka award as a research grant from Novartis.AS has received honoraria for adboards and educational talks from Allergan/AbbVie, Allergosan, Lilly, Lundbeck, Novartis, Sanofi, Teva.JS declares no conflict of interest.TPJ has received honoraria from Allergan/AbbVie, Grünenthal, Hormosan, Lilly, Lundbeck, Novartis, Sanofi and Teva. He served on Advisory Boards and/or consulted for Allergan/AbbVie, Hormosan, Lilly, Lundbeck, Novartis and Teva.TPJ has received honoraria from Allergan/AbbVie, Grünenthal, Hormosan, Lilly, Lundbeck, Novartis, Sanofi and Teva. He served on Advisory Boards and/or consulted for Allergan/AbbVie, Hormosan, Lilly, Lundbeck, Novartis and Teva.