About the Authors

Caroline May

Caroline.May@rub.de

Affiliation Department of Medical Proteomics/Bioanalytics, Medizinisches Proteom-Center, Ruhr-University Bochum, Bochum, Germany

Eckhard Nordhoff

Affiliation Department of Medical Proteomics/Bioanalytics, Medizinisches Proteom-Center, Ruhr-University Bochum, Bochum, Germany

Swaantje Casjens

Affiliation Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of Ruhr-University Bochum, Bochum, Germany

Michael Turewicz

Affiliation Department of Medical Proteomics/Bioanalytics, Medizinisches Proteom-Center, Ruhr-University Bochum, Bochum, Germany

Martin Eisenacher

Affiliation Department of Medical Proteomics/Bioanalytics, Medizinisches Proteom-Center, Ruhr-University Bochum, Bochum, Germany

Ralf Gold

Affiliation St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany

Thomas Brüning

Affiliation Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of Ruhr-University Bochum, Bochum, Germany

Beate Pesch

Affiliation Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of Ruhr-University Bochum, Bochum, Germany

Christian Stephan

Affiliation Department of Medical Proteomics/Bioanalytics, Medizinisches Proteom-Center, Ruhr-University Bochum, Bochum, Germany

Dirk Woitalla

Affiliation St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany

Botond Penke

Affiliation Department of Medical Chemistry, University of Szeged, Szeged, Hungary

Tamás Janáky

Affiliation Department of Medical Chemistry, University of Szeged, Szeged, Hungary

Dezső Virók

Affiliation Institute of Clinical Microbiology, University of Szeged, Szeged, Hungary

László Siklós

Affiliation Institute of Biophysics, Biological Research Center of the Hungarian Academy of Sciences, Szeged, Hungary

Jozsef I. Engelhardt

Contributed equally to this work with: Jozsef I. Engelhardt, Helmut E. Meyer

Affiliation Department of Neurology, University of Szeged, Szeged, Hungary

Helmut E. Meyer

Contributed equally to this work with: Jozsef I. Engelhardt, Helmut E. Meyer

Affiliations Department of Medical Proteomics/Bioanalytics, Medizinisches Proteom-Center, Ruhr-University Bochum, Bochum, Germany, Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V., Dortmund, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CM EN SC MT CS DW JIE HEM TB RG. Performed the experiments: CM EN SC MT CS DW JIE B. Pesch HEM. Analyzed the data: CM EN SC MT CS DW JIE HEM ME B. Pesch B. Penke TJ DV LS. Contributed reagents/materials/analysis tools: CM EN SC MT CS DW JIE HEM ME B. Pesch RG TB TJ LS DV. Wrote the paper: CM EN SC MT CS DW JIE ME B. Pesch.