1. Pivotal & Commercial Synthetics, Process Development, Amgen, Inc., 360 Binney Street, Cambridge, Massachusetts 02142, United States
2. Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
3. Synthetic Molecule Design and Development, Eli Lilly and Co., Lilly Research Laboratories, Indianapolis, Indiana 46285, United States
4. Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, Connecticut 06340, United States