1. Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath BA2 7AY, U.K.
2. Pfizer Drug Product Design, Sandwich CT13 9NJ, U.K.
3. Pfizer Analytical Research and Development, Sandwich CT13 9NJ, U.K.
4. School of Pharmacy, University College Cork, Cavanagh Pharmacy Building, Cork T12 YT20, Ireland