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Conflicts of interest
The work of B.W. was supported by research grants from Merck Serono and from Bayer HealthCare. The work of S.J. was supported by a Fellowship from the European Committee for Treatment and Research in Multiple Sclerosis (ECTRIMS). F.P. was supported by the German Research Foundation (DFG Exc 257) and has received travel reimbursement from the Guthy Jackson Charitable Foundation.
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This study has been approved by the appropriate ethics committee and have therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki.
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Jarius, S., Paul, F., Ruprecht, K. et al. Low vitamin B12 levels and gastric parietal cell antibodies in patients with aquaporin-4 antibody-positive neuromyelitis optica spectrum disorders. J Neurol 259, 2743–2745 (2012). https://doi.org/10.1007/s00415-012-6677-1
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DOI: https://doi.org/10.1007/s00415-012-6677-1