1. University College London School of Pharmacy, 29-39 Brunswick Square, London, WC1N 1AX, U.K.
2. Department
of Mechanical Engineering, University College London, Torrington Place, London, WC1E 7JE, U.K.
3. TA Instruments—A Division of Waters U.K., 730-740 Centennial Court, Centennial
Park, Elstree, Hertfordshire, WD6 3SZ, U.K.