1. Wendy Warr & Associates, 6 Berwick Court, Holmes Chapel, Crewe, Cheshire CW4 7HZ, United Kingdom
2. NCI, NIH, CADD Group, NCI-Frederick, Frederick, Maryland 21702, United States
3. Discovery Chemistry, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
4. Universität Hamburg, ZBH Center for Bioinformatics, 20146 Hamburg, Germany