AUTHOR=Hannibal Luciana , Lysne Vegard , Bjørke-Monsen Anne-Lise , Behringer Sidney , Grünert Sarah C. , Spiekerkoetter Ute , Jacobsen Donald W. , Blom Henk J. TITLE=Corrigendum: Biomarkers and Algorithms for the Diagnosis of Vitamin B12 Deficiency JOURNAL=Frontiers in Molecular Biosciences VOLUME=4 YEAR=2017 URL=https://www.frontiersin.org/journals/molecular-biosciences/articles/10.3389/fmolb.2017.00053 DOI=10.3389/fmolb.2017.00053 ISSN=2296-889X