1. Department of Biochemistry and the Fels Institute for Cancer Research and Molecular Biology, Temple University School of Medicine, Philadelphia, PA 19140
2. Institut de Génétique Moléculaire de Montpellier, Université Montpellier II, Montpellier, France
3. Fakultät Chemie, Universität Konstantz, Konstanz, Germany
4. Department of Human Physiology and Medicine, Vrije Universiteit Brussel, Brussels, Belgium
5. Sierra Internal Medicine, Incline Village, NV 89451
6. R.E.D. Laboratories NV, Zellik, Belgium
7. Department of Nuclear Medicine, Vrije Universiteit Brussel, Brussels, Belgium and R.E.D. Laboratories NV, Zellik, Belgium