1. Spooner Bioanalytical Solutions Ltd, Hertford, UK
2. School of Life & Medical Sciences, University of Hertfordshire, UK
3. Bioanalytical Chemistry, Covance Laboratories, 3301 Kinsman Blvd., Madison, WI 53704, USA
4. Bioanalysis, Immunogenicity & Biomarkers, GlaxoSmithKline Pharmaceuticals Research & Development, Park Road, Ware, UK