1. Institut fuer Pharmakologie und Toxikologie, Medizinische Fakultaet der RWTH Aachen, 52057 Aachen, Germany;
2. University of Chicago, Howard Hughes Medical Institute, Chicago, Illinois 60637;
3. St. Vincent's Hospital, Department of Medicine, Melbourne 3065; and
4. University of Pennsylvania School of Medicine, Howard Hughes Medical Institute, Philadelphia, Pennsylvania 19104;
5. Department of Biochemistry, Albert Einstein College of Medicine, Bronx, New York 10461;
6. Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina 27710;
7. Division of Chemical Biology, Molecular Pharmacology, Stanford University Medical Center, Stanford, California 94305;
8. University of Queensland, Institute for Molecular Bioscience, St. Lucia, Queensland 4072, Australia;
9. Massachusetts Institute of Technology, Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02142; Departments of
10. Obstetrics and Gynecology,
11. Surgery, and
12. Cell Biology and Physiology, Washington University School of Medicine, St. Louis, Missouri 63110;
13. Department of Cellular and Molecular Medicine, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan; and
14. Institute of Pharmacology and Toxicology, CH1005 Lausanne, Switzerland