1. Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, Texas 77843-4461, United States
2. Laboratory for Biological Mass Spectrometry, Department of Chemistry, Texas A&M University, College Station, Texas 77843-3012, United States
3. Department
of Natural Science, University of South Carolina, Beaufort, South Carolina 29902, United States
4. Shell International BV, The Hague 2501 AN, The Netherlands
5. European Petroleum Refiners Association, Concawe Division, Brussels B-1160, Belgium