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Funding OA received grants by the German Research Foundation (DFG), the Hertie Foundation, the Eugène Devic European Network (EU-FP7), German Ministry for Education and Research (BMBF), Schaufler Foundation, and Walter-and-Ilse-Rose Stiftung; and research support by Bayer Schering, Biogen Idec, Novartis and Teva.
Competing interests None.
Provenance and peer review Commissioned; internally peer reviewed.
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