1. Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K.
2. UCB Pharma, 216 Bath Road, Slough, Berkshire SL1 3WE, U.K.
3. Vertex Pharmaceuticals, 86-88 Jubilee Avenue Milton Park, Abingdon OX14 4RW, U.K.
4. Chemical Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield SK10 2NA, U.K.