1. Departments of Chemistry and Medical Physics & Applied Radiation Sciences, McMaster University, Hamilton, Ontario L8S 4M1, Canada
2. Department of Medicine, McMaster University, Hamilton, Ontario L8S 4M1, Canada
3. Pfizer, Inc., 235 East 42nd Street 3/58, New York, New York 10017
4. Department of Chemistry, Syracuse University, 1-014 Center for Science and Technology, Syracuse, New York 13244
5. Molecular Insight Pharmaceuticals, Inc., Cambridge, Massachusetts 02142