Scientific Reports 3, Article number: 1890 (2013); Published: 28 May 2013; Updated: 11 October 2013

The Competing financial interests statement in this Article should read:

“H. Wang, H. Lui, D.I. McLean, H. Zeng and the BC Cancer Agency hold patents for Raman spectroscopy that are licensed to Verisante Technology Inc. H. Wang has ownership interest in Verisante Technology Inc. H. Lui has ownership interest in Lumen Health Innovations Inc. and Verisante Technology Inc.; and is a consultant/advisory board member for Verisante Technology Inc. D.I. Mclean has ownership interest in Lumen Health Innovations Inc. and Verisante Technology Inc. H. Zeng has received a commercial research grant from Verisante Technology Inc.; ownership interest in Verisante Technology Inc. and Lumen Health Innovations Inc.; and is a consultant/advisory board member for Verisante Technology Inc. The BC Cancer Agency has filed a patent application related to the subject of the manuscript.”