1. Mass Spectrometry Group, NIH/National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
2. Computational Chemistry Group, NIH/National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
3. Faculty of Dentistry, Srinakarinwirot University, Bangkok, Thailand
4. School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
5. Department of Bioengineering, Temple University, Philadelphia, PA, USA