1. Sirius Analytical Instruments Ltd., Riverside, Forest Row Business Park, Forest Row, East Sussex, RH18 5DW, United Kingdom, Analytical and Structural Sciences Department, Medicines Research Centre, GlaxoSmithKline, Gunnels Wood Road, Stevenage, Herts, SG1 2NY, United Kingdom, and REYTEK Limited, 11C Rothsay Road, Bedford, Bedfordshire, MK40 3PP, United Kingdom