Functional connectivity of the visual cortex in chronic migraine before and after medication withdrawal therapy.

"5 Competing interests G.M. Terwindt reports consultancy support from Abbvie/Allergan, Lilly, Lundbeck, Novartis, and Teva, and independent support from Dutch Organization for Scientific Research, the Dutch Heart & Brain Foundations, International Retinal Research Foundation (IRRF) and Dioraphte; D. Kies and J. Pijpers, report independent support from the Netherlands Organisation for Health Research and Development and the Dutch Brain Foundation; V. Mäki-Marttunen, S. Nieuwenhuis, M. Kruit and M. Louter report no competing interests; N.J.A. van der Wee reports consultancy for Pfizer, Eli Lilly, Servier, Weyth, and independent support from the Netherlands Organisation for Scientific Research and the EU Horizon 2022 program; S.A.R.B. Rombouts reports independent support from the Netherlands Organisation for Scientific Research. Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper."

"Funding Supported by grants from the Netherlands Organization for Scientific Research (Terwindt VIDI 917-11-31; Mäki-Marttunen and Nieuwenhuis VI.C.181.032) and the Dutch Brain Foundation (2013(1)-247)."