About the Authors

Sébastien N. Voisin

Affiliation Department of Chemistry and Centre for Research in Mass Spectrometry, York University, Toronto, Ontario, Canada

Olga Krakovska

Affiliation Department of Chemistry and Centre for Research in Mass Spectrometry, York University, Toronto, Ontario, Canada

Ajay Matta

Affiliation Department of Chemistry and Centre for Research in Mass Spectrometry, York University, Toronto, Ontario, Canada

Leroi V. DeSouza

Affiliation Department of Chemistry and Centre for Research in Mass Spectrometry, York University, Toronto, Ontario, Canada

Alexander D. Romaschin

Affiliations Division of Clinical Biochemistry, St. Michael's Hospital, Toronto, Ontario, Canada, Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada

Terence J. Colgan

Affiliations Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada, Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, Ontario, Canada

K. W. Michael Siu

kwmsiu@yorku.ca

Affiliation Department of Chemistry and Centre for Research in Mass Spectrometry, York University, Toronto, Ontario, Canada

Competing Interests

The authors have declared that no competing interests exist. AB SCIEX provides infrastructural and reagent support of this research, but has no editorial input into this manuscript. Further, this does not alter the authors′ adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: SNV AM LVD KWMS. Performed the experiments: SNV AM. Analyzed the data: SNV OK AM LVD. Contributed reagents/materials/analysis tools: ADR TJC KWMS. Wrote the paper: SNV AM LVD KWMS.